I just crashed in my 'stich and...
It did it's job and held up pretty well.
I low-sided and slid on the apshalt for about 80 feet and the suit protected me perfectly. I was very happy with it's protective qualities.
However, there were holes worn in the ballistics (the heavy-duty cordura patches) on both elbows and one knee. and I had to send the suit in for repairs. Probably cost about $200 to repair it.
The 'stich isn't cheap, but if I had a different synthetic suit I'd probably just have to throw it out and buy a new one. So the 'stich is a good deal, even at the premium price.
However, my accident made it clear to me that the 'stich is not as abrasion-resistant as leather. My leather suit probably would have just been scuffed rather than holes worn through.
But, for me, the 'stich works well enough and offers excellent protection, combined with being more water-proof and versatile in varying temperatures than leather, plus it allows me to commute with work clothes underneath.
So the 'stich is still a keeper. Add an Aerostich heated vest and you can ride anywhere, in practically any conditions, in comfort and safety.
Also --- I bought the two-piece suit, with black pants and hi-viz yellow jacket. It's visible, but it attracts road-grime like EBass on a cruiser attracts trailer-park skanks. (i.e. it gets dirty quick. If that bothers you, don't buy hi-viz.)