Wish you'd get over the onboard style assembly, Ian... there are quite a few things you already HAVE to use software for on PSR's. This is just one more. Some of the Makeup Tools things need software to accomplish on a PSR. Would you recommend someone hold off on an S910 because it won't do everything in the box that a Roland can do? If it can do it easily using a computer, why wait?

The thing that strikes me is, with two synced arrangers, style assembly could be as easy as Part muting. Guitars from one arranger, bass from another. Reverse them for a completely different sounding style. Rinse and repeat. Might be faster than how you are doing things now, at times...