Long-time lurker here with a somewhat odd question: What do folks use to protect pistol finishes from holsters having exposed interior snap bases or rivets?

For background, I see these a lot in older police or military holsters that are unlined. It seems that a thin piece of scrap leather could be adhered (super-glued?) over them to provide protection, if desired. It would be nice, however, to be able to remove the protectors without damaging the holster interiors, so maybe something stick-on that's tough but non-permanent?

Your insights and creativity will be appreciated!