I can't honestly agree with the 'clunky' nature of footpedals. You have to use THREE of them just to play a piano..! And don't get me started about the 24 of them (and a swell pedal) lurking under a B3..!

And, if the things you go through in arranger mode end up with you being able to do the song the same as the SMF (but with all the extra control and options that arranger mode allows), what's the difference..?

Perhaps you are basing it being 'clunky' because you haven't tried some of these workarounds? As I said originally, trying to pull off a mid-song pause without this tip IS a nightmare of button pushes and playing. Clunky as hell! But program this, and it's a piece of cake.
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An arranger is just a tool. What matters is what you build with it..!