I thought it might be like that. The housing with flash/arms and camera/lens installed weigh 27 lbs. There is a fair amount of air inside there though, so its hard to say which way it'll go without trying. guess its time to see if the local pool considers anyone with a camera in the pool a predator of some kind ;D
---------- Post added April 30th, 2013 at 08:04 PM ----------
Ok, back from the local pool. with all gear attached, It looks like its quite positive. Not so bad that I can't hold it down, but it definitely doesn't sink. I've got 8 jumbo stix floats attached to the arms. I don't think those are whats causing it go go up so much though as it the rear of the camera housing seems to want to go up mostly.
So question... if its slightly buoyant at surface, how far do you have to go down to see nuetral? 10-15m? negative around 20-30m?