Pedal/footswitch to move up and down through studio sets

[Benjaminimus]

I'm looking for a momentary pedal/footswitch for toggling through the FA's studio sets during live performance. I've seen the DP-2 and the Yamaha FC-5 (I imagine but am not sure the Yamaha would have no polarity issue with the FA because it's just a momentary switch).

But as I understand it these pedals simply send either an up or a down value. it would be really nice to find a solution allowing me to go both up and down through studio sets. Is there a single pedal that can send both a "positive" and "negative" signal like this? I've seen the Boss FS-6, but it seems like a lot of space to dedicate 2 pedals (not to mention using two inputs on the keyboard) just to go up and down. But maybe 2 pedals is the only option, given that the FA has separate parameters for "Studio Set Up" and "Studio Set Down"?

Any suggestions would be appreciated.

Thanks.