Panasonic replaced the Lumix DMC-TS3 camera that had leaked for free with a brand new one but it took five weeks so rather than being without a second camera we bought another Panasonic Lumix DMC-TS4 camera along with a second underwater housing.
I then sold the unopened Lumix DMC-TS3 on eBay once I received it.
So far using an underwater camera housing with the Panasonic Lumix DMC-TS4 camera is working out great. Even if the underwater camera housing was to leak the camera itself is still waterproof but so far zero leaks and the camera is actually easier to operate in the housing due to the larger buttons.
Now if only we could get more flat ocean days on our days off…