Not that it matters to anyone, but I've been carefully working my way through the second flavour of Bagginsbill's Ultra Basic Skin Shader (1-10) on the RuntimeDNA Node Cult thread, with the objective to elucidate the function of that above-mentioned shader - the one that came free with the first VSS. So, yeah, I'm like way behind everyone else in this thread, but plugging gamely along. What has worked for me is doing that tutorial and reading up on the nodes whilst doing the tutorial. And writing down notes for myself as I find out more on some of the more esoteric functions of, say, a math_function Add.

Somewhere in all this is going to be the secret to layering (not blending) textures using transmaps.

Just waiting for the "AHA!"

Monterey/Mint21.x/Win10 - Blender3.x - PP11.3(cm) - Musescore3.6.2

Wir sind gewohnt, daß die Menschen verhöhnen was sie nicht verstehen
[it is clear that humans have contempt for that which they do not understand] 

Metaphor of Chooks