I am a confirmed Sig guy that made the mistake of handling a CZ; not just a CZ, but a Shadow 2. The DA pull on the CZ makes my P226 feel like a Ruger. So now I have decided that a CZ is in my future, however I am unsure of what model. If the Shadow 2 had a decocker, there would be no question that that was the model for me. Because I want a decocker and I don't want a polymer frame, I am leaning towards a 75B Omega.

Finally to my question. I like the FO front sight and the adjustable rear on the Shadow 2, but haven't been able to confirm that I could buy a Shadow rear sight and install it on a 75B. Is it possible to do that without having to have any slide milling done?

nope, the S2 sight will NOT work on anything other than a S2 (maybe it will on other Shadow lines).

I wanted to swap out my OEM rear for a 75 series Dawson adj. no dice. The S2 was cut a bit deeper. So I put it on my SP-01.