that's a TGS mindset right there Get on some rocks or anything other than taps, gaps and sidehops and you'll appreciate how important hold is. Saying that, even with TGS most moves are landed with the back wheel trying to go backwards (sidehops to rear, taps, some gaps, hooks etc). All bite does is make a bike annoyingly noisy. I remember a friend going on about how good his brake was and it was indeed loud and had good bite, but it slipped out on me when I tried to get up a low wall and I went to bash.....not what I'd consider a good brake.
To me a V brake is the ideal trials brake, they are quiet forwards so you don't annoy yourself or people, insanely powerful for all the important backwards landing forces, light, adjustable, easy to fix, no pad wobble, lighter pull and levers are cheap to replace. Why top trials riders still use Maguras is weird to me...perhaps they think V brakes work the same as on cheap Argos bikes?