After looking at the McAlister leather bag again I see a feature I had not noticed before , but that I like very much. The little wedge shaped leather pieces on the strap are covers for the brass hardware on the strap. They are to protect your gun from contact with the hardware, which can really mess up a nice guns' wood and metal finishes over years of use. It would be even better if there were some similar type cover for the cover strap hardware. I once read that Sir Joseph Nickerson had all his loading bags fitted with such covers to protect his guns.
My McAlister Ditty Bag does not have them, but I may make some for it as I occasionally take my Fox HE, or another nice double duck hunting.
Stan