Wow.  Yes, that looks pretty good.  Thank you, BB!  :woot:

I don't have Pro and probably wouldn't be using GC if I had it.  So I guess that knocks down my realism a few more notches. 

I tested this a bit and found that it can render a bit clowly, but actually more quickly than my most recent efforts to ad lib such a shader.  And it looks better than what I've had.  Yay!  :thumbupboth:

Now, since I'm not sure what a fresnel really is, I'm going to go a 'Googling.

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Cage can be an opinionated jerk who posts without thinking.  He apologizes for this.  He's honestly not trying to be a turkeyhead.

Cage had some freebies, compatible with Poser 11 and below.  His Python scripts were saved at archive.org, along with the rest of the Morphography site, where they were hosted.