Nice job! I did two toe plugs one just for practice the other for the job to my amazement it came out perfect I remember thinking it wasn't that hard to do, but I was in no rush to do another. Between figuring out the best way to do it, the test run then making the finished job it took all day.
I have a daycare with my wife, and this is the reason I have started what I call tool time with the kid's, the parents love it . funny thing all my daycare kid's know what that is , well that is to say the 3 and 4 year old's do!
One cautionary note if you do use the linseed on a rag to put it on or rub it in DON'T leave the rag in the house due to that spontaneous combustion thing don't want to get into it but one time I almost lost a building due to it .
Neatsfoot oil with a bit of saddle tan mixed in or not let it dry for a few days don't be in a rush. Then some very thin coats of resolene cut 50/50 with water very thin coats then if you like some gum tragacanth inside for some smooth in and out gun action be sure to do this last don't get the gum trag on the outside of the holster
all that said that's just what I would do, I don't think I would put linseed on it.
May I ask how many holsters gun belts do you sell in a year. Also could you give some sort of idea where you would like to be this year in sales $1000 $10000 $1000000 or a million dollars . Then the answer is simple my Friend. Just not sure what your looking for.