See this article, How the tablet will change the world:
I was thinking about those, but was looking at PC data pads, so that
I can install Lightwave, draw an image and render it photo
realistically, so the customer could see what they are going to get.
My reasoning is that I already own a copy of Lightwave (bought and
paid for), and recently acquired an STL import/export plugin. The
natural benefit is to be able to take the model apart and send the
files to a CAD/CAM machine.