loop-pedal controlled by external switch?

[Sigesmundninja]

I have a Carl-martin octaswitch, it has 8 loops and 2 "external switch" outputs for controlling amp-channels for example. I was thinking that i might be able to build loop pedals with I/O for guitar/amp and send/return for effects but on/off would be controlled by the "external switch" outputs of the octaswitch instead of a foot-switch.  this would give me 10 loops instead of 8.

Please give me your input on this idea. How would you tech-heads construct this?