Hey Snoop !
Sounds like you are getting along just fine with that new monster.
Like you, I am a bit divided about when to use Registrations or when to use LiveSets. If I don't intend to use Lower and Solo, I suppose I would just create a LiveSet and let it go at that, but then I may just go ahead and assign suitable Lower and Solo Tones that I might want to use at some time in the future and save it as a Reg, if for no other reason than the fact that Registrations are much faster to call up than LiveSets, but to use a Reg just for quick access to a single LiveSet seems to be a horrible waste of a precious Reg. It should be possible to run a complete gig or session just from LiveSets, if you don't want Lowers or Solos. Save your LiveSets in user memory in the order you want to play them, and create a single Reg that calls up the very first LiveSet. Set the display cursor on the "UPPER" (LIveSet) number and just hit the increment button to go to the next LiveSet for the next song. The only problem is, a Reg sets up the rest of the keyboard the way you want where a LiveSet just deals with itself. If all other board parameters remain the same, then a single setup Reg would work, otherwise you would need a new Reg for each time other keyboard parameters would need to change, but even at this, it would still provide a means of getting use for several LiveSets out of each Reg - Call up Reg-1 that calls up LiveSet-1. Play LiveSets 1 thru 3. Call up Reg-2 that loads LiveSet-4. Play LiveSets 4 thru 8. Call up Reg-3 that loads LiveSet-9. Play LiveSets 9 thru 12 and so on and so forth. It would take some real planning ahead of time, but I suppose it could be done. I guess in this respect, I have been spoiled by the Juno-Gi. LiveSets is all it has. Then you just fill the "Favorites" banks with Pre-set and/or User LiveSets in whatever order you need them for quick recall.
When it comes to turning LiveSet Tones on and off in real-time, in case you haven't thought of it yet - for any LiveSet that uses a Tone that you want to always be ON - put that Tone in slot 4, since that is the one you do not have easy access to in real-time and put the Tones that you want to be "swicthable" in slots 1, 2, and 3 and switch them on and off from the front panel buttons, but you have to be in LiveSet Edit Mode to do this. Not sure if that would be a good idea in real-time on a gig.
So far, I have found trying to do any of this in real-time from the iPad screen a bit disconcerting. At my age, with my eye-sight and shaky, pudgy fingers, as big as the iPad screen is, it is just too crowded and too "busy" for me. I like to do my real-time switching or controlling from a discrete button that goes "click" when I hit it or from a real knob that I can feel with my finger tips. Perhaps I will never be much of a "touch screen" player.
Enjoy !
Regards,
Ted