Working on that, should be available (for me) soon. I developed this small midi foot controller for Eleven Rack with "special features"
[img]http://flic.kr/p/MSv5s5[/img]

Basically it's switching banks up/down of 4 rigs where all my banks are defined like this:
1- Clean
2- Crunch
3- Lead
4- Wah (auto-enabled when you start using it)

Tap tempo on the current preset
Mute/Tuner on the current preset for 2 seconds

It has 4 modes:
1- Normal mode (bank up/down for all banks)
2- Output lock (bank up/down for banks of specific defined output, like FOH, Combo, Bass Amp, etc..)
3- Bank lock (stays on current bank: bank down=Distortion on/off, bank up=Modulation on/off)
4- Channel lock (stays on current rig: bank down=Distortion on/off, bank up=Modulation on/off, clean=Tap Tempo/Mute(Tuner), crunch=Delay on/off, lead=Reverb on/off)

So it can be used as a regular midi foot controller, as a 3 channel amp with distortion/modulation pedals or as a 1 channel amp with distortion/modulation/delay/reverb pedals.

It is phantom powered with special breakout box, the size of a double effect pedal and weights around one lbs, so fits in guitar case/gig bag.