Quote - Are you sure? Sphere map works very fast for me.

Sorry, I was unclear.    The sphere map is faster, but using a reflection map instead of the raytraced node seemed to produce results which weren't right.

Poser has a fresnel node? 

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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.