I don't have any Pics but the Mitch Rosen express line single mag pouch is what I use to conceal a G17 mag as a reload for my G19. It is a OWB pancake style mag pouch made to use a 1 1/2 inch belt. It holds the mag close to the body in a proper "bullet forward" orientation. The price point is about $35. I routinely wear it under a t shirt without issue. I have looked at these websites and I can only find the double pouch or the one that carries a tac light. It is $55. That one looks pretty cool and I have just ordered one. I'm sure that it is just as well made as the single. It is available from Mitch's website, Brownells or Dillon Precision. Here is a link.
Oops. Here is the link:
Dillon Precision: Reloaders, Reloading Equipment, Bullet Reloading, Bullet Reloaders