Chip, the subsurface image for this version took around 1+1/4 hours, the final render was about 8. Ridiculous for an image of this size of course, but it is T2 and quite slow at rendering at the moment. Not to mention my computers limited capabilities.
The render resolution was 800x600 as I only have the free version of the tech preview.

The final render was at:
detail level = 0.7.
anti-aliasing = 3.
GI = 1/6.
Atmospheric samples = 64.