My wife carries hers in a pouch from Bagmaster. Hers is purple, unfortunately discontinued in that color, but we have found and stockpiled a couple by searching gun shows, etc. Basic black is still in stock here:
BAGMASTER - Quality Bags, Cases and Holsters
Hers is "belt pistol pack small" and can attach with a spring steel clip, belt loops, or ALICE clips. When she had to take her gun on and off frequently she used the clip, if not the ALICE clips or belt loops are more secure. Better if she didn't plan on taking it off, or was wearing a good belt for the day. It's plenty big enough for the gun, some cash and two spare magazines, and the quality is fine. I imagine a camera, Blackberry, or Ipod sticker on the outside could make it even more camoflaged, too. If she dosen't feel like carrying her Glock, this is her favorite set up.