This is what I've been looking for! Generated code on a production quality server (Netty), with no faffing around with JSON, etc. It would be sweet to see that Java server ported to scala though (or some docs to show me how to plug scala into the Java server), and also front-end javascript clients (I saw that was a work-in-progress).
If this would work with juniversal[0], and if that's actually any good, then this might actually give a quick way of churning out cross-platform apps.