Found and bought this. Was impressed by the demo. It’s cheap as chips and is pretty cool; does what it says on the tin.
If you’re looking for a budget way to paint your 3d models futurepaint3d is highly capable.
Yeah another McGyver tool…
You can do the same from Maya or Photoshop.
Finally I keep a very old school touch and keep working from a flat psd file…
Also other modeling software does well the job like Sculptris (free), zbrush, etc…