I have a Cytac for my KWA M9 and love it. I wanted to get one for my WE G18c which has an extended barrel, so I run a mock suppressor on it. I wasn't confident that my 18c would fit this Cytac glock holster (as the 18 isn't listed) let alone with the suppressor attached. After reassurance from the staff I ordered this product. I'm sure glad I did. My 18c fits a little tighter than my KWA in its holster, but I'm not saying that's a bad thing.
I can't get enough of these holsters. I used to have a drop leg holster, but never liked it for how much it moved around when I ran. The drop leg even released my mag on a couple of occasions. I don't have this problem with my Cytac.