I finally decided and went with the InCase Sport Case. It’s got a sturdy belt clip, detachable armband for the gym, and the case itself looks quite nice. And with all the crazyness around people looking for iPhones because they’re so scarce, it’s a neat little disguise for public use.
I was going to go with the Contour iSee but a friendly fellow iPhone user at the Apple store showed me his and how the clip barely held it in place. He said his fell out twice already and was there to replace it with something else.