I bought ArtRage Studio Pro last year as an upgrade from my version 2.0 that I had, but have been too busy to install it until last night. The other bit of incentive to actually install it was that I finally upgraded from a generic pen tablet to a Wacom Intuos 4 (medium, refurbished). What a dream to use. Just fantastic. Nothing to do with Blender exactly, but this is harkyman.com, not blender.com.
Anyway, I got it all set up and did this last night and this morning (click for high res):