ZEN and Riot bipoar supply?????

[screamersusa]

More sillyness from me

My 4 channel pedal is getting interesting. 
I'm wondering now how easy is it to use the zen/timmy circuit and
the riot at +-12 to 15v.
The three reasons to consider this are:
1)  I'm mixing eq's and other circuits designed for bipolar, some prebult like a soundtracs eq.
2) More headroom
3) Integration into a 2 channel amp so each channel has 2 options.

I could probably just run single supply circuits on the positive rail, but why not use the power 
End result: pedal and amp,  Clean, Sparkle, Drive, Chaos, speaker sim, dual inserts.
                 Pedal only, Master stage eq, iso sim or non sim outs, balanced out, lead channel.