Well, I got some goat or lambskin leather from dealers. For them it's only scrap, cause there is no use for gloves and pouches, for it is too skinny. They usually just sort it out and trash it in the can. They don't even can imagine, what some insane people will pay for some piece of hide 0.1mm thick. Unfortunately, the range of colors is poor. You can get them in a light brown or a light grey. Had no problem until now, to get them airbrushed with waterbased acrylic flat paints.
I hope, that Alfalfa seconds me, who got a large part of Italian capretta hide by me. It's all a question of research for the material, that will fit your model.
This stuff is almost paperthin and moving it along curved edges is almost no problem.
So is the piping made of genuine leather. Keep your eyes open to look for 0.5mm leather piping. No more trouble with any coated wire a.s.o.