I have a question for all of the iPhone 5 owners who have been using a bumper case regularly. If you take your bumper off, do you notice any damage to the sides of the phone? I loved my Apple bumper for my 4 & 4S, but one thing I did notice is that it rubbed the stainless steel band side and left some marks. I'm assuming a bumper on the 5 would do the same thing (if not worse) since the sides are softer aluminum. I'd like to hear from some people who've been using bumpers for a while before I buy one myself.