not with my Bumble Bee, but I have a few watches that use ceramics for either case or bezel or both -and it did happen with my IWC Top Gun Double when I literally ran into a wall and scraped the watch on it. Looking at the watch after the incident I was convinced that I had damaged the finish of the ceramics. When I was at home I used a pencil eraser to see if in fact the finish was damaged or if what I thought was a scratch was actually material from the wall - and to my luck it was the latter and some rubbing with the pencil eraser solved the issue entirely. When I wear my Bumble Bee I am much more concerned about dinging the forged carbon case, because that can actually happen quite easily and the only remedy for it is a case replacement.
cheers
Rupert