Interesting little setup. I searched some YouTube videos, and it looks like it puts off some pretty good heat.
It doesn't require the high output alternator, but it does need two batteries (24 volts). Looks like the kit comes with the cables to wire two 12V batteries in series with one another. This would be a good setup if you run dual batteries or if you're wheeling with other rigs and can pull a couple of batteries out of them. I have to wonder how much use you can get before the batteries need to charge back up, but it does seem like it could get you out of a jam (think: CHUSA in Death Valley).