If you have the time and can wait for a true artisan to make you a real English leather hand blocked and boned holster check out my holster maker, Andy Arratoonian of Horseshoe Leather Products in Ripon England.
Covert model 28: High ride, FBI cant and C-O-M-F-O-R-T-A-B-L-E! It's worth the wait!
Holsters by Horseshoe Leather
A good carry belt is as, if not more, important then the holster!
scrimp on the belt! A good belt will make a sub-standard holster tolerable!
Visit Jim Speidel's site; Gun Belts by The Belt Man
he comes well recommended.