After getting perspective on things I discern that V4-WM and the upcoming M4-WM is a end-user tool and not for the cloth-creator.

Because for the user is it only a question of a few seconds and in most cases it works out of the box. But for the vendor to check everything TO BE SURE is a lengthy process that takes more time then modeling itself. Especially vexing as you already have done that once. You can be pretty sure most vendors will not take or should I say risk the trouble.