I had a little play with Lux materials in the meantime, trying to get a passable skin. Apart from being fairly clueless in these things, I had a hard time figuring out how to set things up from the available documentation. Unless I'm misunderstanding things, it seems that LuxBlend does many things in its material settings that don't go into materials in Lux. There's a "light" material that doesn't seem to exist in Lux (or I didn't know the magic incantation), and an "emission" property that Lux materials don't have. It's all extremely irritating. Anyway, looking at the materials produced by bagginsbill's code helped a bit.

I've tried to use the mattetranslucent material type (mixed with glossy) to get some fake SSS going, but I'm not sure that had much of an effect except in slowing down the render. More experiments later. If I had the time, I would start writing a material editor right about now, but I don't.

-- I'm not mad at you, just Westphalian.