Hmmm, can't find a way to edit posts. Accidently hit submit instead of preview...
Anyway, as far as being able to swap the ground and positive connections as in the Lovepedal, that does NOT always work, especially with older, original designs.

Because of the power adapter. You can use a battery or a separate adapter or an isolated power supply. If you use one power supply and daisy chain all your negative AND positive ground effects, as soon as you plug a guitar cord from a negative ground pedal to one with a positive ground, you will sho...