They remind me of Roy's Leather Goods "Pancake" holsters. Roy went out of business about 15 years ago. Good designed products. I tried to partner up with a local businessman/friend to buy the business but he was leery of 'gun stuff'.
I have one of the Roy's Pancakes and really like it after many years of use.
Glad to see the designs are still available and, reportedly, good quality. Hope he stays in business.