Zagg Glass (with deep scratch in it: already replaced it once due to dust underneath) with Tech21 Tactical case. Other times I use the Dot Case. Sure, it doesn't close all that well with the Zagg Glass, but it is sufficient.
Naked most of the time - have the Speck, Otterbox Defender, Verizon case with holster and HTC Dot View case. Willing to sell cases if anyone is interested...