"Is it possible to load alternative geometry switches on a figure via a pose?
To inject only the code that is needed...
Just wondering...

:^)"

I don't think you can inject an entire geom swap routine into a cr2 using a pose, but you can swap geometries with a pose.  You can only do it with one body part per pose, but it can be done.  The "Multi Hair" on my site, linked below, uses this technique.

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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.