You might try a custom maker if the price doesn't put you off.
makes a lot of cowboy leather, and their site says they make holsters for most double action and single action revolvers.
There's also Haugen
, and there are more if you Google around.
"An armed society is a polite society." — Robert A. Heinlein
"After a shooting spree, they always want to take the guns away from the people who didn't do it. I sure as hell wouldn't want to live in a society where the only people allowed guns are the police and the military."
— William S. Burroughs