Thanks for clarifying. My understanding is that if a T5 style, for example, is taking advantage of a scat Megavoice that doesn't exist on the PSR-S950, that you can 1) substitute it with another Megavoice, 2) use software to get rid of the Megavoice properties and substitute another panel voice, or 3) use software to get rid of the Megavoice properties and substitute it with a USER voice, but you're never going to get that scat vocal sound that was part of the original T5 style.

I hope that your dream of making the S950 play all of the T5 styles is fulfilled and that others can partake of the fruits of your labor, but it seems like a quixotic endeavor.