Well, I'll be the azzhole who says (again) that the BC's have worked pretty well for me. Flipping them open is just a muscle-memory thing. Properly sized, they won't fall off.
Mostly though, I can't be slingshotting a cover off my scope with a wary buck 25 yards away doing the "I see you but I'm not sure what you are" gig.
Different strokes. Not dissing your covers; just don't like to see the BC's bashed unfairly. I know you have to contrast the mechanics of your system against existing ones... but IMHO you are overstating the "problems" with BC's.
