Those are some nice pics guys, thanks for sharing!!
I don't think you can overbuild one..LOL...Saddle skirting leather is the "only" leather to use in my opinion.
Here is a look at my
7X Leather Chest Rig
I tried to support as much weight as possible from the torso strap, so you don't have all the weight hanging on your shoulder.
What I really like about the rig is that it can be worn in serveral postitions, from the center of your chest, down at your belt buckle area , shoulder holster postiton, or cross draw...with very simple adjustments. I can easily draw my revolver even with a backpack and I can still wear my binos. (this little "snap case" is for earplugs...because you sure can't shoot the 500 without them..lol)
It is carrying a 4" 500S&W with Rosewood, Badger Kframe conversion grips