Hi Doghouse,
I had something to ask but can't remeber for the life of me what it was... never mind. It'll come to me later.
I did this technique myself a while ago (when the new DA kits came out and i had spare termi legs), i think this was about the same time as you were inventing it. Here's a tip i thought i'd share: If you are going to model robes out of GS onto your model, you can use a straight marine torso. When you model on the robes you bulk up the body enough around the shoulders and waist so as it looks in scale.
Al
EDIT: i remembered! With using vaseline, i'm guessing you de-grease the model before priming? What do you use to do this?