As I was prepping my X-T1 to be sold I noticed that the paint had rubbed off of the top of the viewfinder. I also don't baby my gear. I use it, but don't abuse it. It didn't bother me when I saw it either, I thought it made it look 'well loved.' But I can't remember a time where I put undue stress on that part of the body. I honestly think that the paint rubbed off from being transported in the camera bag. It was not a snug fit by any stretch of the imagination, but the camera didn't sit on its bottom while being transported, it typically rested on its back so the top of it would be in contact with one of the padded walls of the bag.
I thought about taking a black sharpie to the points where it rubbed off, but I decided against it. The camera sold very quickly even though it had those blemishes and also had the issue where the grippy part of the camera where the heel of your right thumb rests was peeling off.