They hold up fairly well from my experience. But they're not invincible. The area where the keyring hits the scales is often a good indicator.However, some of us do like the look of a nicely worn alox scale This one took 60 years...(Image removed from quote.)(Image removed from quote.)
One thing's for sure -- laying your black Pioneer down on pumice stone will wear that finish faster! Use and enjoy your knife. When the finish is past what you like, get a new one.