I pretty much only use the FC7 when I’m doing much arranger stuff, which is pretty rare these days. I can do what I need in a song using the Assign SW’s and panel buttons for SMF/MP3’s most of the time.
Tbh, it’s just one more bit of gear to lug around for little reason these days. I used it a lot more back when I did styles a lot more, but of little use nowadays.
However, I do use the FC7 every time I use my BK-7m because of the need for hands free control while playing my keytar..!
An arranger is just a tool. What matters is what you build with it..!