I had 2 from GGG that both rubbed off. It currently looks just like the picture posted here. The first took a few months to rub off and Randy T was gracious enough to replace it for me. However, the 2nd rubbed off within a couple of weeks.
I happen to have Pongo's vinyl decals for my admin buttons and they have been rock solid. So I plan to simply use rubbing alcohol to remove what remains and then apply the new start decals to my buttons.
P.S. - It was probably me that caused them to rub off. I do indeed leave fingerprints on sheetmetal, such as computer cases, etc. So it could have been my acidic sweat.

~ DeLuSioNaL