Gliterrattii Switchable, stacked opamps ala Beavisaudio

[insomniac2295]

So, I'm working on this super deluxe overdrive pedal. The idea is to have selectable mid-hump frequencies, selectable diode clipping and selectable opamps. My question is regarding stacking and switching opamps. Basically I've taken my notes from Beavis audio's screamer lab- http://www.beavisaudio.com/projects/ScreamerLab/
1.) should the switches be on-off-on, on-on-on, or on-on switches?
2.) does this even work? I've read somewhere that he never got his stacked opamps to switch properly. Is the logic sound?
3.) will it be fine to joint all three pin1's together and all three pin7's together on 2 strips of veroboard? I'd like to do that instead of having a hot mess of wires soldered together. The joint I'm talking about is in between all the switches and the PCB.
Here's a visual: