I have both a Polytune that can daisy chain pedals off its 9vDC output with an 8-plug wire and a Godlyke powerall deluxe kit that I just got.
In the little cardboard "manual" for the Godlyke it says "WARNING: always daisy chain your pedals directly from the pa-9. Daisy chaining off the DC output of a pedal in your chain can damage your pa-9..."
Now, I'm 99% sure this means no using of the dc output of the Polytune, when it's plugged in with the godlyke psu, but wanted to confirm this is truly the case.
It's not that I need the extra plugs for extra pedals right now but wanted to make sure I never make that mistake.
This link, although about the TU-2, seems to lend credence to that warning in the "manual" http://stinkfoot.se/archives/528