I'm considering putting a few magnet holders around to stash my gun, but I don't want to get into the ethics of it. What I'm interested in knowing is if there's any actual damage to the gun strictly as a result of being magnetized. Not if the surface of a particular magnet marred the finish, but if the magnetic field itself does any real damage, or causes any real problems. After reading & searching, the only comment I found about them was this: I'm thinking about putting one there, one in my car, one in my truck, and maybe one under my desk. Any magnet-related reason NOT to?