Personally, I am always up for a challenge. That's the fun of painting for me... getting OUT of a comfort zone. (Not that I've ever found a comfort zone).
Something else that artists might do is offer a "blank canvas" for sale. Meaning... people who want their businesses or homes painted could pre-purchase (basically like a commission) a blank canvas from an artist. The artist is guaranteed a sale that way, and the potential patron could browse through a notebook of artists' styles and general price range in order to choose. Of course, artists would have a choice of participating in this or not.
I would have loved to have attended some of the mini-workshops, but just felt like I really couldn't miss the opportunity to paint. Maybe next year I can schedule longer time there so I get to do it all!