Hello Spalding 4
As far as I am aware, you just load in the styles and play, with no tweaking required, in fact from the current info available it does NOT convert them to a Wersi Style, but plays them as if they had been loaded into a Yamaha Keyboard.
Hopefully we will have more info when it is released. (Talking to Wersi at the Pakefield Festival, I got the impression that they were also in discussion with other manufactures)
We will just have to wait and see

Bill