I'm on the same side as Cecil. We actually use the same camera.Cecil:I'm on the other side of this fence. One camera top and bottom, I accept the rather limited shortcomings in both places for the convience. I have a tiny PnS for both, underwater there are time I wish I had more manual control, out of the water a longer zoom would be nice. Given these limitations, you just can not beat being able to slip your camera in a BCD pocket for that giant stride or putting it in a pant's pocket for a trip around the island.
I wanted to add that if I want to take topside pictures while diving
I take a second land camera. It's not feasible to open the housing
while on a boat and the housing lens port creates a lot of glare on
a sunny day.