I keep mine out in front of my loaded Pedal Train PT-2. It stows nicely with the board in the PT-2 gig bag (with a digitech whammy in the front pocket ta boot!).
I could never really justify having the floor board mounted on my pedalboard. There are many situations where I just show up with my Roadster and pedalboard and jam on channel 2 the entire night (great cleans and blues tones with a couple of screamers and a blues driver). In fact, I'd have to say I play the amp without the foot controller connected about 90% of the time. There are given songs/settings that require a channel change, but I just reach around and flip the channel manually. For the most part, channel 1 is dedicated to a clean jazz tone (don't use anything but my Epiphone Dot for that channel), channel 2 is the do-all-with-pedals channel, channel 3 is vintage crunch and channel 4 is modern crunch. Typically I don't need to change channels mid-song, but if I'm jamming with a group and I don't know what to expect, the foot controller is a must.