I've been in threads other places that swear that Gorilla Glass is unscratchable with simple, in your pocket only, day-to-day use of a "naked" iPhone. So after using a shield since iPhone 2G I gave "naked" a shot with my 4S and within one month there were micro scratches all over the glass. Never again. My iP5 will have an InvisiShield to be sure. I'm convinced most people can't see the scratches they have on their glass - because you have to tip the phone at a very particular angle to see the surface of the gorilla glass well. I'm bummed I was swayed away from my instinct with my 4S.