Karma really is the next evolution as it gives you a freedom that you don't get from Styles. KARMA almost gives you that fully Sequneced sound in a live situation that constantly adapts to what you play. The actual notes you play and how long you hold them are all part of how KARMA generates different elements in real-time. Unlike a Style which is a locked patteren.
Here me playing straight piano for example.
http://www.youtube.com/irishacts#p/u/6/gGwH7E_fn6c You can see when I turn on KARMA. As I said, it really is the next evolution, but for now I think it's too much for arranger users as it requires an entire change of attitude and approach.
Regards
James