Positive and negative ground pedals in the same enclosure?

[sfr]

I'm thinking of making two "all-in-one" steel-stud-type pedal setups, one for each of my bands and the chain that I use playing out.  I have a couple positive ground pedals I use. 

Will this work?  I was thinking of going with separate jacks for each effect and powering them off the isolated outputs on my Gator G-Bus as I do now.  As long as the power jacks are isolated from the chassis, so the + and - voltage doesn't short out (like connecting a positive ground pedal into a daisy chain powersupply) I should be okay?

What about making a bipolar power supply for the whole thing, referencing ground to 0V, and having a +9V and -9V to run to the various pedals? 

I'm thinking it may just be easier to make new boards for the positive ground pedals.

[R.G.]

You can connect the signal grounds for the positive-ground and negative-ground effects as long as the power supplies are independent, as you describe. As long as the power jacks for p-ground and n-ground are isolated so that you don't get an accidental short, you'll be fine.

Making a single bipolar supply for the whole thing works too.

You have the important idea well in hand - keep the two power supplies from being shorted by signal ground or chassis.