KAS
I've got some Fieldsheer gear, a Spiga jacket and Astro trousers.
I bought mine in March of this year for a cold and wet weekend 'oop Norf and unfortunately I got wet. To be fair it was 6 hours of torrential rain and I believe that, rather than actually leaking, the water got in around my neck due to the low collar and then ran down inside the jacket and eventually made it's way to my crotch
Despite this I stayed warm for the whole journey and only felt a slight dampness on my chest - it was only when I got home and took the gear off I could see exactly where I was wet.
Don't let this put you off though, the gear feels really well made, the jacket and trousers have a full connecting zip, both have full armour and the price is ridiculously cheap - £70 for the jacket and £80 for the trousers. Taz Motorcycles must have bought the Spiga jacket in bulk as they're shifting them for £70 all this year.
As for the Mach jacket, I wish I'd found this last summer - it has to be cooler than the Hein Gericke PSX T2 suit I bought.
HTH
Adam