Hi,
nice indeed!
but only windows!?! too bad... can't really understand why it's not cross platform to begin with...
I guess, the best move you can make is to contact them and ask their plan on unity integration, this is certainly something they are already working on actually. Once they have a plugins that work with unity, playmaker could come in and for example create the game logic flow for you to hook up to. That would be of course incredible! especially with clients always willing to have a input, they would design the story, and you build the surrounding bits.
very impressed by this, tho the fact that it's windows only is not really good...
bye,
Jean