I've used Winn releases since '96. I've tried others (Tru Fire Hurricane, Scott Lil Goose) but I keep going back to the Winn. It just works for me. As far as it rendering your hand useless, I don't agree with that. It's just something you have to get used to. I climb into my stands (screw in steps and ladders) with my release on as well as fumble around getting set up.
I've never had any problem with this release and I hunt in any kind of weather imaginable.