My opinion, Don’t do it! The Shadow is going to be a better shooter and the Omega will become a safe Queen. If you really like the color scheme save some money and get it painted.
On the other hand..... If you want/need it as a back up gun while you modify your primary then that’s an excellent reason to get it. If you plan on buying one in the future, then buy it now. With CZs you never know when you’ll see a particular model and the Urban Grey is, dare I say it, kinda rare. If you are still on the fence just remember it’s always a good time to buy a CZ if that day ends Y.