I have a S&W 629 Alaskan Backpacker with a ported barrel, and Hogue Grips.
I bought it from a friend years ago and he included a David Johnston Guides Choice Chest Holster with Reload, that he bought from David at the Tulsa Show.
I started wearing it when I was fly fishing along some of the streams and rivers in the Colorado back country.
I have since taken it with me whenever I am heading out to isolated areas.
David Johnston started Diamond D and I have always thought it was the best holster I have for comfort and accessibility.