This thing actually works pretty well! Granted, I only spent a few hours with it today, but nothing blew up, nothing got any hotter than usual, and there weren't any popping sounds, crackles, or anything weird when changing heads.
Hell, I even emailed Mesa about this pedal two weeks ago, asking if they thought it would damage my heads, and they said Radial puts out quality stuff, which they do!
Still have my Radial Twin City for two heads + two cabs, A, B, or A+B.
Justin, it's OK, I know you just creamed yourself...
I still gotta run the 5150 in stereo with the dual rec at our jamspace with my DD3.