I've changed my workflow a bit because I now have so many great donors for La Femme clothing conversions. I'm converting for La Femme first, because I have found that her completely unrealistic ability to move the shin and forearm sideways. It is especially helpful for boots. Once fit everything to a non-zeroed La femme, posed to make the morph brush work as easy as possible, a create an interim boots/garment in the fitting room. I go back and zero La Femme, and I can now pose the garment to get her zeroed form. The I create the final garment. I use the LF version for other figures, where again, the ability to pose the forearms and shins side to side helps immensely.

In this image, I already did the morph brush work to unzeroed LF (her left here is non-zeroed, and the right is zeroed to show how I posed her to fit the objs).