Further to my reply above--which was basically that when not diving a drysuit with pockets I prefer a vertical bellows pocket on the harness waist strap--I had also tried pocket shorts. I felt they didn't size well for me--the larger size felt too baggy and the smaller size was difficult to don/doff. And it's one more item of gear to bring, don/doff, rinse after diving, etc. Did I really want to don/doff not just my wetsuit but now also pocket shorts on a Caribbean trip, where the non-geeky majority are looking comfortable and carefree in thin wetsuits or boardshorts? I ditched the pocket shorts before a Bonaire trip, where I knew I'd be donning and doffing gear several times a day, and adopted the bellows pocket.
I also finally had a chance to try the 3mm Deep6 wetsuit with the integrated pockets (mentioned above by others) that I had bought some time ago. As much as the pockets seem like a great idea, the suit felt a lot bulkier and more annoying to don/doff than a typical wetsuit (duh) or even my drysuit. Not to get off topic, but for a 3mm wetsuit it's, uh, sturdy. I don't really even need two pockets for the kind of warm-water vacation diving I do. No, for me the answer to my need for a single pocket for tropical trips was the bellows zip pocket on the harness waist strap.