We are a couple that does leather work. GrayTac began in 1999 making holsters. We evolved into sheaths, bags, wallets, keychains and pretty much what ever you can imagine and sketch out.
We do 99% by hand, but will on ocassion utilize a heavy duty sewing machine. We cut the leather, stain it, punch the holes and add the thread, rivets, etc. It is not mass produced, not inexpensive, but well built and should last a few generations.