This gear will be worn on a variety of bikes - 1150GS, FJR1300, GTR1400, GSX650F, 650GS... So "adventure" cut may not necessarily be an advantage.
Just been looking at both the Scott Priority jacket & pants (great prices for Gore-Tex laminated stuff - good call Younger06 ), and the Stadler/TT stuff.
The Scott stuff is handsome - just how I like bike gear; subtle and unfussy. Can't find much online to get myself informed on it. I did have a bit of a look at the Scott stuff in the tent at the TT event in Wicklow last year, and I did like it. Just didn't realise at the time that they do Gore-Tex Pro laminated stuff.
I love the idea of the Stadler/TT suit - a summer suit with all the armour in it, with a Gore-Tex Pro laminated shell. Huge money, but arguably a pretty complete solution to the "all-season" issue. BUT... in practice that's no different than using a ventilated jacket from one brand with a separate waterproof shell from another (involving the same rigmarole of donning/doffing the rain layer when necessary, scuttling the goal of not needing an over-suit), and that could be achieved for a lot less than nearly €2200...
I know you are concentrating on Goretex membranes but Scott do another suit, one notch down in their range called the Scott Definite Pro DP..............this seems to be their "business class" (as opposed to First Class) version of the Priority......using there own DRYOshere laminated membrane
https://www.scott-sports.com/global/en/products/2463921040011/SCOTT-Definit-Pro-DP-Jacket
It looks like it might be a bit tougher (750D textile) than the Prioroty and I can vouch that their own membrane is perfectly waterproof and extremely breathable as I have one of their jackets with DRYOshere drop liner. I'm a big fella and I run very hot.......If I sweat in a jacket, it just get's discarded. Take a trip down, they have a lot of stock.
I'm going to pull the trigger on the Priority or the Definit this summer, they are extremely well made.