Quote - Also curious to see what sort of effect this new weight-mapping (which to me is an incredibly nebulous concept atm) will have on dynamic cloth, if any.

I don't see how it could really have any real effect on dynamic cloth.  Perhaps weight mapping will allow better bending in the crunch zones of some joints, making it less likely that dynamic cloth would become trapped in a crease, creating simulation difficulties.    Otherwise, I wouldn't expect much difference in dynamic cloth from a change to the joint handling of figures.

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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.