Gotta say, I'm not a fan of the diamond tuck, seems out of place on a German car, but that's just a matter of personal preference.
That aside, you can tell that it is a quality leather and that the craftsmanship is superior.
I've done leather reupolstery before and the leather itself is usually the cheapest part of the deal. You've found a guy with that kind of skillset at a good price and when the need arises, I'll definitely contact him.
Love the color, the stitching and crests, but the diamond tuck, not so much. Good luck with them.