Hi Snodog...
Yes,, those are the sheaths I make...
They are actually made from Concealex..
Similar to Kydex and is widely used in the industry...
Well good quality custom leather will last many years.. Both have their good points and bad...
The advantage over a custom synthetic sheath over a OEM sheath is that they are hand made, with special attention to fit.
This type of sheath will also allow for many different types of belt attachments and ways to carry the knife.. With the stock sheath you are basically limited to one type of carry...
As far as the width of the sheath goes...
Well they can be made slimmer thats not a problem,, however you also limited yourself in some ways, as some clips may stick out slightly..
The only real difference you are going to see is about 1/4" -3/8" difference in width, as well as you have a proven handmade product....
I guess it all depends on what you like..
Thanks for the interest and hope I've answered your questions....
ttyle
Eric
O/ST