Looks like it's a hair faster on the gig (although changing Performances mid-tune should be a piece of cake), but looking at Donny's description, looks like a HELL of a lot of work to make just the one style work.

One of the cool things using a multi-switch pedal allows you is a 'Next Performance, Previous Performance' pair of switches. Hands free, you can go between a couple of Performances (or more, if needed) for a much more complex set of Variations and styles to perform just one song...

I don't know if you get any patch change 'glitches' on other arrangers, but my G70 does this seamlessly, and it's impossible to tell that the performance got changed. It's a great way to have subtle changes in rhythms (take a style and strip the drums down to the bone or import a different guitar part for one section) or larger style differences (like here) and also, if you copy the style and then edit the OTS, you can have a much larger selection of keyboard sounds ready to go.

But the work to import ONE Variation into another style (and you have to lose the replaced Variation, reducing your choices while in the swing section, for instance) seems a heck of a lot more than setting up a pair of Performances...