I don't really think you should use Vector Render, but maybe composit a wireframe with a render, using a white background for your render, so that if you save it as a targa, it creates an alpha map and you can just place these images one over the other in Photoshop.
I like it so far, and I hope that the link to the pelt mapping helps you.
cYa LaTeR,
MaTt
Live the life you love, love the life you live