So to operate out of the water it's really not that practical. It is then more suitable as storage case or transport protection because it but it is pretty tricky to get in and out. But the D10 consumption by their robust design also do not constantly a protective sheath.
Their optimal use, the sheath during use water while snorkeling for which the D10 is also thought so.
They can hang on the belt, the camera is as well protected. Along with the bag has the D10 in salt water (tested only there) buoyancy.
Also it is easier to get in and out to get in the water as on dry land.
You can secure the camera even further by also mounts the camera loop in the carabiner when swimming longer distances.
For the water I could not imagine a more appropriate structure.
