Underwater/low temperature/fall resistant category is the only one I use besides my D5 Mk II. And I was waiting for the next version, since the D10 is really old. I'm tempted to go with the new Panasonic. But I'll wait for them.
If you have to have one camera for vacations, and or following kids through the beach, or when going to ski, this is the sort of camera to have. Very important in my opinion.