CZ 75/85 and Shadow mags will fit, but they won't work as-is without adding the locking notch at the front of the magazine. The Grand Power guns magazine release works from either side of the gun, because it uses a locking notch on the front edge of the magazine, not the sides.
If you have the Mecgar magazines for your CZ's, they often have a hole in almost the perfect location. You can open it up with a small window file. The Mecgar .40S&W mags also work... Tanfoglio small frame magazines with the window added also work.