I've carried my Glock 19 & 27 in an Survival Systems holster for almost 2 years now. The specific model is the Elite, size 9a. I like it a ton, its very comfortable and the price is unbeatable if you wear the write belt with it. Also offers the option of ambidextrous carry because of a removable IWB clip that attaches on both sides. Check it out:
http://www.elitesurvival.com/index.php?p=product&id=28