Can someone clue me in - is there a separate coating on the gorilla glass 2 that would be removed by rubbing alcohol? On past phones, I didn't mind cleaning my protected screens with rubbing alcohol to get rid of some of the nasty bugs I wouldn't want on my face (work in a hospital), but I don't have a screen protector on (yet) so am wondering if it's screen-safe to do so. (My guess is safe answer is no.)