THB I would think they really SHOULD care.
if you go unplugging a hot cable thats at 300 volts with a few hundred amps flowing across it, that's going to be a pretty impressive emerald green arc you draw, which is going to tear some crap up too. Not to mention if you somehow manage to get yourself caught up in that as well, you are in some bad trouble. Wasn't one of the companies looking at like an 850 volt bus? That's a widow maker there you get caught on that.
Aaron