Just got back from a week of scuba diving in Cayman Brac. The Seafrogs housing performed flawlessly throughout. Interestingly enough, there was somebody else on the boat who also had a TG-4 but using the Olympus TG-3/4 housing. Side by side on the camera table, the Seafrogs housing is slightly larger in size. Mounted on the Nauticam tray with a single YS-D1 and a Fantasea video light, the set-up was negatively buoyant but easy to manoeuvre around and use. Quite happy with this back-up and simplistic set-up. In slightly over a month, I will be heading back to the Caribbean and my wife will be using it barebone, equipped only with the video light.