Hi Scott
Very interesting, but new to me. This is one area of softsynth music creation I have not addressed, but have to before long.

I have been told by programmers, that arranger functions have, by in large, been overlooked in the software industry. It seems to be a niche market.

If something happened to my keyboard, I guess I would have to bring a laptop with Band in a box and some midi's. A very unsettling thought.

Since I have always had arrangers, I never thought of alternatives. It seems too time consuming to make all my needed styles from scratch, even if I could.

What would you recommend ?

Sorry to hijack your post.
pa4X 76 ,SX900, Audya 76,Yamaha S970 , vArranger, Hammond SK1, Ketron SD40, Centerpoint Space Station, Bose compact