Well there's no way you could really control the M13 with the Octaswitch. If control is what you're looking for, you may be better off with something like the Rocktron Patchmate or Voodoo Labs Pedal Switcher. These products do the same thing as the Octa-Switch, essentially, but they can be controlled via MIDI. So, it would allow to create presets incorporating the M13 and your existing pedals. As far as controlling your amp, there are ways to do that via MIDI, too. Voodoo Labs makes a thing called a Control Switcher that will enable you to change your amp's channels via MIDI as well. If you've never used MIDI, it might be a little learning curve. But in the end, it would give you a more usable system.