I use one, and love it. You'll have to use a turkey fryer, or some other type of gas burner. The bottom of the keg has a lip on it, so the actual bottom wouldn't make contact with an electric burner.
I think it's pretty easy to clean, but keep in mind they're quite a chunk to lug around.
May you go marching in three-measure time
Dressed up as asses, drunk to the nines
Swing from the rafters, shouting those songs
Gone unsung for far too long