Sure it looks cool, but I still don't think I have a use for it.
I think that the Strategy/State pattern is one of the most important for effective OOP, and it's a great thing to have language support for it - the Typesafe Enum pattern is just a little bit too verbose without it...
The soul is dyed the color of its thoughts. Think only on those things that are in line with your principles and can bear the light of day. The content of your character is your choice. Day by day, what you do is who you become. Your integrity is your destiny - it is the light that guides your way. - Heraclitus