+1 on the ATACs. I definitely feel the pressure increasing just before they release, which makes accidental releases pretty unlikely. And even if they do release, you'll know a split-second beforehand because you'll feel the increasing tension - that's probably all the time you'll need to get your balance.

I'm using Frogs now, and as an earlier post mentioned, you won't feel it until you've already released. I haven't released accidentally yet, but if I were really worried about this, I would use the ATACs. No way am I ever going back to clips - they're either too inefficient (loose straps) or too dangerous (tight straps).