I'm a big fan of Wild Bill's Concealment's Covert Carry holsters.

Wild Bill's Concealment | The Professional's Choice

It's a family owned business in Garner NC, and they do excellent work at a reasonable price. If it's not in stock they can make it for you and have it at your door in about 3 weeks. The website says 8-10 weeks for made to order items, but I've never had it take more than 3 weeks from order placed to little brown truck of happiness at the door.

Below is a picture that shows both sides of the holster, as well as how they look new, and after some use. WBC uses natural colored leather, and it takes on it's own brown color after some use. The design is also tuckable, with the shirt going between the tab and holster. The off set clip also makes the holster much lower profile than is normally the case with an IWB holster, and it's very welcome with a revolver where the cylinder is already the thick spot in the rig, and a clip on that spot just makes it even thicker.



WBC also makes a great slip over speed loader carrier that lets you put 2, 3 or 4 rounds inside the belt line to reduce the profile.