keycode17:

Yes, you can use VWD without installing it in Poser9 for DAZ Studio with the add-on DS Bridge for VWD. The DS Bridge talks to the main VWD EXE the same way Poser would, so you shouldn't have any issues.

Just to make sure we are all on the same page, you still need to purchase the main (Poser) VWD, and the DS Bridge to VWD for use with DAZ Studio. You just don't have to use Poser whatsoever, unless you want to as well.