I just got a CZ 75 stainless, did not clean before shooting and it worked fine, up to 300 rounds now and do not plan on cleaning till after next range session, which should put me at 500.
I did take it apart to give it a once over, and ran a patch through the barrel, and put a little oil on it before shooting. So I guess I kinda cleaned.
SO I would advise, you do not have to clean it. You should make sure bore is clear (run a patch or plastic brush) through it. Does not hurt to oil or clean it if you like.