If your style needs aren’t THAT extensive, you could always prepare Performances that call up the style, then use ‘Hold’s’ to retain your current Tones and tempos (if doing it mid-song).

Alternatively, if just changing at the end of a song, a Performance per style with typical Tones and a generic appropriate tempo.

Lastly, styles can be called up remotely via MIDI/USB. If you have an iPad or tablet, there are plenty of programs that allow you to define buttons as PC# send buttons and allow you to label them. So you could still have a curated list of favorite styles which you could call up mid-song without disturbing anything else.

I know it’s a paradigm shift to go from hand calling everything to presetting everything for each song, but as a performer, it’s amazing how much it can free you up from a ton of button pushing and allow you to fully concentrate on just playing and interacting with the audience.

And you can still have a combination of both system if you prepare different Performance Lists, one with a song specific setup per song, and another one with just generic calls for your favorite styles. P,us, at home, every time you start with a generic call, and fine tune for a specific song, it takes just a few seconds to call up the specific song List, and store what you just fine tuned into with the song name…

There are so many ways to skin a cat with the Roland’s…

BTW, you have already set up your Favorite Tones section, right? If you can’t do it for styles, at least you can do it for your RH sounds…
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An arranger is just a tool. What matters is what you build with it..!