I love this style of map - its a direction in map creation that I'd like to master myself. Just my luck, everybody (Ravs, anyway) wants me to produce only hand drawn maps - when this map you have is exactly the kind of stuff I want to produce. I can't create maps like this by hand.
As far as "Painterly" - I draw, I hate to paint and don't do it. So the only way to achieve a painterly look for me is using software.
Great job, Torq!