I must have researched a ton of leatherwork vendors when I was looking for a case, and Oberon are the only studio I've seen anywhere (and they have been doing this for over twenty years) which produces their kind of made-to-order, hand-tooled designs over drum-dyed aniline leather.
I have seen maybe one or two vendors on etsy.com which do something similar with the design, but they don't work with the quality of material that Oberon uses. Even right down to the pewter clasp on the cover, which is cast by Oberon in their own production studio.