You choke on the cost of wood and then think nothing of using half a hide of leather! It would never have occurred to me to use leather as where I am the lumber would be cheaper by far. Anyhow, I'm all for using what's around, if possible. The yellow stain has a "glow" to it that makes the brown look flat.
Regarding the maker's mark, have you thought about one of those little el-cheapo lasers, they're great for something like that as they can be placed wherever you want on the hide and the mark burned in. Just a thought.
Thanks for the detailed ride along, it makes for a good read.