Questions about both new and old ork skin

Its clear that the recipe for ork skin has drastically changed, i know there is a tutorial for new ork skin but is there a guide for the old one? I know its just shadowing with black instead of blue and higlights with white and not yellow but is there a complete tutorial for it?

Does anyone know what the base coat is for the new skin? In the guide they use averland + skarsnik but i cant manage to find the right ratio, does someone know of a vallejo or ak alternative that looks similar?