Gorilla Glass or not, drop that sucker face first on the road and watch it slide and you will wish, in slow motion, the entire time it slides that you had a screen protector on, lol true story
I've only dropped my phone once, and it was in it's case, and it was fine. I don't take the holster bit off it unless I'm actively using it, and the only time I dropped it I was taking it out of my pocket while holding two bags and trying to fumble with my keys.