this ^^ unless I'm dirt jumping or bunnyhopping some oversized, off trail obstacle, I keep my seat the same height I do on a dh bike, which is around stem height. Sometimes a little lower on a shorter travel bike (I mean like a couple centimeters) because you need a little more room to suck up big stuff with your legs, since the suspension of a dh bike isn't there. You need to be able to control the bike from your saddle, and it doesn't work if it's in between your shins. Trials is really the only riding where you effectively need no seat, and some newschool street bmers also ride like that.
I actually hate my reverb because it drops too low (came on the bike, haven't swapped it)