I would say you are likely going to have to have one custom made. Nite Ize makes some pouches as well, similar to the Rip Offs but I don;t know if that's what you are looking for.
If you want to go with leather I'd suggest talking to Esteban as his leather work is excellent. Beyond that, the only other suggestion I could make would be Eric at On Scene Tactical, but he only does kydex.
Def