I would be really interested to know if someone is working on it. I think it would be a cool combo, or the new ultramel line\pied would be really cool.
Adam Wysocki produced some Double Hets in 2007. I did the breeding last year, but my Pied female didn't go. I think it will be a neat combo, but I know for sure that at least one person is working on it.
debating on that project myself. I am already going for albino pied, spider pied, and pastel pied hets this year, not sure if we are going to use the caramel female in another top secret project yet or not