Not that I've got anything against Kingfrog's opinion (he's as entitled to it as anyone else's!), but because he doesn't always add this caveat, I'll put it in...
Kingfrog does NOT use his arranger for playing live, and does not play in realtime very much (he has said that he uses styles to create sequences, to create original songs for recording and songwriting purposes). This is NOT how most of us use our arrangers.
And while there is absolutely nothing wrong with this (it is ONE way I use my own arranger, too), if you are looking for advice, you need to take this into account. How an arranger works for you LIVE, onstage, with demands about quickness of navigation and simple live control is what so many of us need as a primary prerequisite, and I don't think this is one of Kingfrog's main concerns.
This is not intended as any kind of put-down (as I said, I use his methods as well
), but merely a heads-up to those that might take this advice without the knowledge of his way of using them...