Your finish is a polymer paint, and its a very good finish; very scratch resistant.
I've had several CZs -- and my favorite gun, today, is a CZ-85 Combat. Like Johnbt, about all I do is pull a "boresnake" [damped with hoppes or CLP] through the barrel from time to time, and wipe it down. About once every 5-6 weeks I clean it thoroughly. (It gets shot a lot: 100-300 rounds a week.)
The chance of a malfunction from a dirty firing pin/firing pin chamber with this gun is probably almost non-existent.