I use a Dead Eye Luke. Its one piece kydex without separate "increase width" belt fasteners. Belt grab has open bottom that curves up to catch belt, so you can put it on/off without taking your belt loose. Some folks like the option to remove holster, insert gun then slide it IWB. You can also adjust tension with the application of a heat gun or high watt hair drier.
Dead Eye Luke set up a booth at most panhandle gunshows. Ownership changed about two years ago and my purchases(4) were from the previous owner.