Thanks Maybe, I have been deliberating over the pros/cons of divulging the medium (others have enquired), but as I am a bit of a one-trick-pony, alas, I would like to keep it under my Deerstalker for now. Of course, if someone should guess, I would come clean. Not that it's a great biggie. Ha. What a phrase.
Someone with traditional, conventional, representational...
with actual painting skills could no doubt achieve something quite special with this surface. Although, it might be a bit bumpy!
...Or one of our early, "cave painting" human ancestors, or cousins, the Neanderthals, would do the biz. Yes, "a traditional painter" I hear you reply.