If you think that most people are going to go out and suddenly start producing their own professional loops that integrate with existing Ketron styles, I am positive you don't know most arranger players!
The vast majority of them don't even EDIT the styles they have, let alone make new ones even in MIDI. And recording and producing pro quality loops, slicing and dicing them and integrating them into a style is a task beyond even 1% of all arranger users.
No, this technology is going to be used to pirate Ketron's audio styles, plain and simple.
As I said, if you WANT to make your own styles from scratch, and incorporate your own loops into it, you don't need the Ketron style player at all! You already HAVE that capability. The reason the Ketron style player is being greeted so warmly is that people will now be able to play Ketron's copyright styles without buying a Ketron. There's simply no other way to look at it.
Sorry.
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An arranger is just a tool. What matters is what you build with it..!