No case, although I have a bumper.
I Probably should start using one, as I've dropped it on to asphalt from the back of my car at least 3 times. Always when I finish surfing.
So far it seems pretty tough to me (although my sister shattered hers).
Just very minor chips on the edges that I would have to use a powerful macro lens to show.
No way on the case, takes the look away, too much of a pain to clean everyday and if your not careful and don't clean the thing..lints, dust, etc will get in between the case & the phone and scratch the hell out of it.
I've had no scratches or drops, been using it naked for little over a month now.
When I went out to a nice dinner, I've tried it a couple of hours without a case, and I really like it. It's smaller, thinner, and definitely cooler looking, especially in public.
But I've heard stories about microscratches that end up all over the glass, let alone real scratches that can happen with or without hitting other objects like keys, coins, belt buckle, zipper, or whatever.
I had the Invisible Shield, but the corners always lift after a while and it gets really dirty and ugly.
It's because of that that I'll reluctantly return to a case.