Has anyone every tried running this thing with 2 PSU's?
I am
I'm running each blade with an HP DL380 G4 server power supply, which can put out 42amps on the 12v line
I had 4 of the power supplies, soi figured why not

I'm running one run of 12 gauge wire from the power supply to each blade
12 gauge is roughly the same as 3 runs of 16 gauge
I'm a big fan of server power supplies
These babies are designed to be run 24/7 for years
I have heard some people run both PSU's to a power bar and then switch the power bar on so everything fires up at the same time.
Have you had any of these kinds of issues?
Nope
I just always power on the second blade first, then the first blade that has the control board
I am buying a power distribution panel that can turn on and off individual outlets from a web page,
and can measure power usage
This way if the antminers ever act up, I can reboot them remotely

And I want to know how much power they are using.
I know server power supplies are usually very efficient, and can run at 90-100% load for a very long time