El Paso Saddlery make some excellent Western holsters for modern double actions.
Many of these are made to the same pattern El Paso made in the late 1800's and early 1900's.
Look up Mernickle on-line. They specialize in western holsters, but will work with us double-action guys. The made me one for a 2 1/2" 66 and a 3" 65. I love them.