I've researched this a ton.....I have almost pulled the trigger so many times on custom leather rigs. El Paso Saddlery, Simply Rugged, Mernickle, etc.
I really think the Hill People Gear chest rig probably the best. It's on my short list of things to get this month. And honestly, I would almost make the gun choice fit the rig. I just don't see a monster 460 as deployable in a "Need to use it right now" situation.
I indend on running a worked over Ruger BH in 45LC with 310grn Leadheads.
Evan had a long list of what handguns fit in their bags from various users. Pretty interesting.
Think it's like $105 and it will work with many handguns, not like a custom El Paso Tanker....which was on my short list.