Sorry to publicly geek out, but I've been messing around with this for a few hours and I'm obscenely excited!
I never thought this would be possible with the current-gen Poser models, but I'm very glad to be wrong :)
Say what you will about DAZ; they're seemingly first in line with innovation.
Rendered in Carrara; I just cherry-picked the translucency maps from the "Reby Sky" shaders. (The lens flare is just to show where the light's coming from)
1280x960 image rendered in 9 minutes with SSS, 7 minutes without. Not too bad...
There's definitely more tweaking needed, but I'm pretty happy so far!
What do y'all think?