I gave up on trying to find holsters. While I own two Glocks, my tastes in pistols generally runs contrary to the aftermarket support crowd. And when I DO find a holster, I toss it in the pile after a few days for whatever reason.
Now I do my own out of kydex. Not professional enough to sell, but certainly robust enough for my tastes, and made to my specifications.
The great thing is if you aren't satisfied, total scrap is inexpensive, while tweeking/reforming involves a heat gun, (nomex) gloves, and simple tools as required.
Here's an example of one I did for my G2 with TLR-1, mounted on a Blackhawk belt. I plan to modify the belt loop on this one. I have a knife sheath I made for my RTAK that allows it to be slipped on/off a belt easily, but is secure once on. This holster deserves the same configuration.