[Alan Anderson]

I would never put one upside down. The LEDs are too useful to hide, and I would worry that the circuit breakers and router power connection would be liable to fall out. They're in there pretty well, though, and I might just be paranoid.

Keep in mind that the inspectors are going to want to see the circuit breakers. Be sure you don't make it too hard for them if you do mount it upside down.