Here you go; it's ghostship2's Cycles shader for P13 published on the P13 forums here (I think it's stickied somewhere). I'm still trying to find the Subsurface Radius values that eliminate the faint blue undertones/ glow, but the subsequent updates to the software keep messing with the values, plus the Dawn2 skin gives me odd hues (so I probably need to play with the HSV values there too).

Current SSR values I use are 0.1, 0.1 and 0.1--a lot less than what I have for V4 skins.

(Redfilter node is a Separate RGB Cycles node. Bump2Normal is a Cycles Bump node.) SSS method is Random_walk_fixed.

Super curious about what hborre came up with!