If default Poser would be able to save and load partial mats, there would be a lot more of these things. But currently you need addons or python scripts to do this.

But even then - this will not work with complex skin textures. Adding a partial mat will remove the existing nodes on that position and python scripts need to be very complex to be able to add a blend with something like a VSS setup

Experienced users are able to do it by hand, but the majority can not do this.

But getting back at topic: Has anyone tried the V5 morph with Genesis and with clothing with the exporter and get good results?