Cool!  I guess it's now time to go through the entire figure and set this up and give it a go.

On a side note (not even remotely related to this) I have noticed that when I look at the shader nodes that the unimesh realism kit set up, or when looking at some tutorials, there are custom names on a lot of the nodes.  I was just wondering how to go about renaming the nodes to something other than color_math 7 or the like.  Can this be done manually, or only when the nodes are set up using a python script?