I don'ts know exactly what your needs are but a friend told me a number of years ago that the Yamaha MFC10 doesn't send multiple CC messages. The FCB1010 does and it has a lot going for itself; readily aviable mod chips (I installed the uNo chip into mine), 3rd party PC editors, built-in two pedals, huge support on the net, and dirt-cheap! I never owned an MFC10, but the 10 foot switches and two extras swithes for up and down are pretty good to operate.

I need to incorporate a midi foot controller for vArrnager myself My Gordius Giant is not too travel friendly but the Softstep will be.

A bit old, but here's a comparison chart for midi foot controllers http://musicplayers.com/tutorials/guitars/2006/MIDI_ComparisonChart_r2.pdf

An accordion player using the Roland midi foot controller and Ableton live.
https://www.youtube.com/watch?v=9UvIq-fvxYI