i'd be more worried about wearing out the barrel than the slide finish. those barrels are not cheap to come by.
Favorite range gun for the money - CZ 75B or STI Spartan V 9mm
Go-to carry setup - Walther PPS or PPQ in FIST kydex holster 1AK
Favorite .22LR - Browning Buckmark
"A Sig is like a lightsaber - not as clumsy or random as a Glock."