Glock sub-compact holsters....
For a good concealed type holster, I'd look at these brands; Blackhawk SERPA, Safariland SFS or the ALS, the "skin-tite" line from HighNoon Holsters, Mitch Rosen, Milt Sparks, Greg Kramer, Don Hume, Kirkpatrick Leather, COM Holsters, Blade-tech, DeSantis, Galco.
A Kydex or polymer rig will hold up well & retain the Glock sub-compact.
ClydeFrog