That's air thinking, you dive in water.ScubaVP once bubbled...
The reason I was looking at it was for the additional lumbar and lower back support.
An AL80 will swing from about -3 to +3 buoyancy. Do you need lumbar support for three pounds?
Even double 104s will be about -20 max, you probably don't need lumbar support for that, either.
The problem with the Zeagles, Transpacs and other more-or-less "mainstream" BCs is that theyre designed to look and wear well in the showroom. But the stuff for the showroom is either unneeded or actually detrimental in the water. BPs certainly *look* uncomfortable in the showroom and may in fact be a little uncomfortable in the showroom, but get them in the water and watch them shine!
Roak