I've bought up Note to Midi conversions before on other strings... I understand that they take up a lot of processing power and wouldn't work well for the Duo.
But I wonder if there is a way to make a pedal which will do the type of conversion that Jam Origin's Midi Guitar 2 does. http://www.jamorigin.com/
Polyphonic guitar note to midi conversion with a single jack.
A roldan GR-55 with Pickup combo is $800 and would still need installation. The Roland SY-300 ($700) is polyphonic with no special pickup but is only internal and doesn't offer midi conversion.
Would it be possible to make a stomp box powerful enough at a reasonable price which would do what the Jam Origin software does? Just the note to midi part...
That would be so cool!