For IDPA and IPSC I have never found it necessary to change my setting on my guns with adjustable sights. Never. At the ranges we typically shoot I just found there isn't enough difference to require adjusting the sights. This might have something to do with my ineptness in shooting handguns too. I suppose CZ decided for the purpose the gun is to be used for adjustable sights were not necessary. I agree. I prefer fixed sights on my handguns but have ones with adjustables.
Take Care
Bob