Cool insight on his method and apps. Yes he uses Brushes.
If i had an iPad I would buy this!! Perhaps an iPad for my birthday.
There is a new drawing app called 'Paper' that makes me want to get an ipad for drawing. It has diffent BOOKS that you can sketch into and seem simple and easy to use as well as the awesome rewind option. Oh yeah it's free for just the basic tool. I'm hoping they will go cross format(android & windows 8). Check it out.