My Galco concealable, Summer Special, Miami Classic, my Wilson Lo Pro, and my Dillon Catus league slide all work great with the KZ45. With a quality holster the weapon will fit tight, which is what you want to prevent "holster wear", it will break in well with repeated practice draws, you should do this with an unloaded weapon of course. If you call Wilson and ask what holster to get from them for your KZ they will send you a standard 1911 holster. For informational purposes, the magazine holder you will need is one made for a Glock 17. Good luck.
Everyone should have at least one 1911 in their stable.