I have a scratch on mine - it is incredibly shallow and invisible in nearly any conditions, but it is there. I have a feeling that it happened the one time my wife carried my phone for a few hours - she put it in her coat pocket on a cold day, and she wears diamonds on both hands.
However, I've dropped the thing on the floor, and my kids have THROWN it on tile, concrete and sidewalk. The black is a tiny bit chipped up, but the screen has never suffered a mark from that. The battery has shot out when the door has popped, and the SIM even ejected once, so it's not like it has been babied.