If you squeeze the sides of the case on the phone does it move very slightly? My black one does and I tried 4 at the store all the same. Only concern is dust etc getting in their and scratching the phone.
Not noticeably so, but always a good idea to periodically take the case off and clean things up.
I may pick up a thin protector for the back; I used a cheap ebay dry-apply one on my 4S with an Incipio Feather and it worked great to prevent any scuffing in two years of ownership. Didn't care about clarity or anything since it was hidden by the case.
Thanks. I guess it could be subjective on what play is. Its very small but there. I may wait a few days and try another one at another apple store. I will clean it often.