I feel as though there is nothing to worry about. The display phones are handled by hundreds of people a day, thousands of people a week. These phones have been there since day one, almost two months and I'm quite sure many people are not being careful with them, I wouldn't expect them to be.
Just don't treat your phone like a display model and I think it will be all good. Also anything will scratch with enough pressure anything will dent if it's hit hard enough.
#Naked Tuesday