I'm a 5'11, 150lbs guy skiing on Scott Venture skis @168cm. I am an advanced but not expert skier and enjoy bumps and starting to get into steeps.
Have now had quite a few crashes with these bindings.
They release correctly. I've not had any occasions when they released inappropriately, nor any occasions when I felt they should have released but didn't.
The release is very strange for someone more used to traditional bindings. There is no sensation of them releasing. At one point after a tumble, my other half asked if I still had my skis on and I had to actually look down at my boots to see whether I still had skis on. I didn't feel the skis coming off during the crash.
I had one fall that would have been perfect for an ACL injury - on a steep pitch and uphill ski hit some compacted snow as I turned to look over my uphill shoulder (schoolboy error...) and twisted backwards, falling head first down the fall line. Uneventful release and happily no great damage done apart from a bent pole from the subsequent self arrest...
The main annoyance with them is that they are quite stiff to get into and require a fair amount of pressure on the heel piece. What is mildly inconvenient on the flat is annoying in the steeps and means one has to expend somewhat more energy than necessary.
Overall I'm pleased with them apart from these idiosyncrasies.