Evo, thanks but maybe I was not clear; the kind of case I want is leather and is the clip on type, you know, the kind you clip on your pants. Must fit in a case with a silicone bumper on the phone. Most clip-on cases have an exact fit without the bumper.....
Actually, I never had one. I used with BB and SK but not with iPhone. It's REALLY that strong and can withstand being sit on. Since it's small enough, I put it in my pocket. I don't think I know of any iphone that broke due to being sit on.
I don't think you can find a clipon with the protective case. There is a clipon but it requries iphone naked.