I just purchased it- and will be trying it in Photoshop (which reads EPS and AI) and in Corel Draw (which I think also reads those- plus SVG). I initally plan to use VectorStyle as a compositing layer in Photoshop with stuff I've rendered in Carrara's NPR render.

Also- in case anyone doesn't already know- VectorStyle is licensed from Electric Rain- the same people who make Swift 3D. While it's not the very LATEST version of the technology- it will work just fine for my purposes, I think...
http://www.erain.com/company/Technology/