Taking advantage of the weak Yankee Dollar, I bought myself an Olympia Phantom suit about a month ago and have been using it regularly since.
Why?
Well I have a 30 mile commute twice a week. I have plenty of decent motorcycle gear, something for most uses but if there is a drawback with my gear it's that it means carrying something to change into.
There's no way I'd ever consider a 'Stich. Too expensive and frankly I don't care for the look.
I was a bit concerned that I couldn't see the Olympia before buying. I had a concern about the sleeve cuffs (it's not clear how they close or whether there is an option for wearing gloves inside or outside the cuffs). I also was a bit worried about sizing.
First off the ordering process:
I ordered from Bob's BMW. Their on-line process is easy enough but the shipping costs were scary as hell! (The initial quote is somewhere in the same region as the suit.

). It transpires that the actual costs are a great deal less.
I used the size chart on the Olympia website and seem to have got it right.
The suit arrived within a week of the order being placed.
The suit in use:
As described, there is a thermal "jumpsuit" included. The suit comes with this attached to the outer.
I have found that it's better to use the inner suit separately. The inner suit attaches by means of two short zips on the chest and loops at the ankle plus sleeve cuffs. As a result it can be a pain to make sure that the inner suit doesn't come adrift when taking it all off.
Also, if you want to have the ankle cuffs (of the jumpsuit) inside your boots for better thermal sealing, with the inner attached you cannot do this.
Boots also drag more on the material of the inner suit as well as spreading rain and muck from your boots down the inside of the jumpsuit (and possibly transferring it to your day clothes).
I personally find it better to get into the jumpsuit before putting my boots on. This obviates the need to use the outer leg zips on this part of the suit.
The outer suit is easy enough to put on and take off, it actually slips over the rip-stop nylon of the inner suit very easily.
I do find that the velcro tabs on the zip covers tends to snag on the sleeve cuffs and the straps for drawing the sleeves in tighter.
The sleeve cuffs are actually some of the best on any suit I've ever used. The bulk of the liner and the outer suit stops a few inches short of the cuff. This means that there are a couple of inches of just Cordura, great for either going over a glove or under it if that's your preference (or depending on the length and bulk of the glove ). They close with a decent velcro tab. The tab itself has a stiff plastic section at the end to help gloved fingers get a clean grip and therefore a decent closure.
The ankle cuffs are not so good. They have a velcro tab to help tighten them around your boots but because the zip doesn't go to the bottom of the leg closure, there are about six inches that relies upon just a vertical strip of velcro to close it. It's not easy to get this to mate properly.
This wouldn't be a problem if the means to tighten the the ankle cuff was positioned so that drawing it tight pulled the leg closure together around the leg opening but it doesn't. The tab is behind the leg zip closure, pulling it tight can open the 'velcro only' section of the leg closure.
The neck closure is good. A decent collar has a soft section under the wearers jaw so that it doesn't chafe. It is also shaped to prevent that bunching under the jaw that you sometimes get with some jackets. Again a velcro tab with a decent bit to get hold of.
Pockets: Good and Bad.
Good; the two large patch, water-proof pockets on the thighs. Decent size, good water-proof closure.
Also good are the two slash hand-warmer pockets where you'd expect to find trouser pockets. These are deep and in just the right place.
There's an inner zip pocket under the velcro cover for the main chest zip that doesn't mean the zip has to be opened.
The chest pockets are a waste of time. They are too high and as they are top opening, it's almost impossible to get a hand inside once in the suit. If these had been given vertical openings (a la BMW Rallye II), they would be ideal.
The large pocket on the back completely defeats any logic that I can find! To access this, either you need to be out of the suit or a contortionist! I wouldn't want a pillion messing about with it when riding either.
Weather Protection:
So far I have ridden in some pretty cold and very wet conditions.
It has remained water-tight, I even wore it the other day when I was washing the bike so gave it a squirt with the hose to clean off some road dirt and to test the abilities. It was fine (cleaned-up easily too).
I've not worn the suit on my GS. I use it exclusively on my un-faired K75C. It does benefit from extra layers. It's not a T-shirt and shorts suit. The leg cuffs can allow the odd draft if using a short boot (for the reasons covered above) but with long boots, no problems.
I've not tested the abrasion/impact qualities (and I hope not to). The armour doesn't feel as substantial as the latest stuff in the Rallye Pro but it's not flimsy either.
On this point, the knee armour seems slightly out of alignment (too much towards the inside), there's limited repositioning capabilities and the hip protectors are in two "spaniels ear" pockets that just hang down inside the outer suit. These can get pulled out of place when entering the suit and need to be re-positioned each time.
Getting the size right is important. Better too large than a bit snug because once sitting down you need to have enough excess material to not drag on your shoulders.
Overall, I see this as a suit for the convenience of being able to wear over day clothes for short trips.
I haven't any idea what it will be like in warmer weather but it does have vents.
I'm not a fan of these one-piece suits. They are not the panacea that some claim. For instance you still have to have somewhere to store a heavy and possibly sodden suit at the end of the journey, you still need to wear substantial protective footwear, gloves and a neck-warmer/Buff. They still require extra layers in the cold.
One big advantage is not having to carry
as much alternative stuff for your arrival.
One big disadvantage is that if you stopped for a sit-down lunch somewhere, you'd have to find somewhere to put it. Even more of a problem if its sodden (at least a traditional over-suit can be stuffed into a Tesco carrier bag!).
If your intention is to ride somewhere with the minimum of stops, spend more than a few hours and then return, this suit makes sense.
If you are touring etc., there are better alternatives.
Have I wasted my money? No. This seems like a worthwhile investment of not much money when you consider that including shipping and taxes (£70 UK taxes), it costs a lot less than a pair of HG or BMW strides alone!