I finally found me a Ruger Montado Vaquero.
RugerŽ VaqueroŽ Distributor Exclusives Single-Action Revolver Model 5120
Been looking for a while now and had just about given up. Now I need the leather. It seems to be harder to find than the revolver was. Not many 3.75 vaqueros around to create the demand.
I am looking for leather and like the idea of a crossdraw style. Actually I would like to have a standard right hand holster as well for when a cross draw wouldn't work.