I can't agree more! I have been pounding cowhide for a while now and built lots of holsters for CAS and hunters. I always recommend that you don't waste the time and money of lining. The only possible exception is to use two relatively light weight veg tan, 6-8oz back to back so that one smooth side will be next to the weapon. It looks a little better but won't help the "Wear" issue and dirt in the gun bucket.
The other thing is that the holser is NOT a storage bag for your gun. When you come out of the field, take the guns and clean them and clean the leather and hang it up....put the guns in the safe!
Rap Scallion Live Oak Texas