To add my $.02 into this converstion:

This may well work as an arranger, if eKo (or an adventurous user) is able to intergrate the arranger software with the sound engine - from the work of Frank Rosenthal, this looks like a doable task. However, what is also important is the ergonomics of the setup: for a live performance it is not enough to be able to navigate to the desired style using a touch screen or a pointing device - you have to have BUTTONS to make your selections. Providing a button surface and software which integrates it into the navigation scheme which may include a variety of audio, sequencing, and style-playing software components is a non-trivial exercise, and I don't know if it has ever been addressed in the PC environment (other than by Wersi).

I am not saying this is impossible, but considering what a small market segment we the arranger keyboard users make up, our needs will likely be put on the back burner.

Regards