I just checked cgtalk and they may be loosening up, now that P8Sr1 is coming out:

"Q: Can I use Poser, Daz 3D or pre-fabricated models?

A: Yes. This is no different from using your own pre-built models or the parametric models now availble in most 3D systems. However you should add significant creative input to make the models and results unique?"

I left in the typo, syntax errors and the final question mark that they added, almost like they're not really sure anymore if the medium is more important than the message.

p.s. somebody'll re-enable some kinda 90s renderer once enuff users demand it.