Here's a night's work with some ~4 oz vege tanned leather, some black Fiebing's dye, some waxed thread and a DeWalt cordless. It's a hack job attempt at a Sourdough style pancake for my 5" Model 60 357.
It seems to serve the purpose as it stands, but I'm probably going to make something similar out of 10oz so it will hold it's shape a little better.