I don't understand the fixation with the doublebladed lightsaber. If the light part of the lightsaber can actually cut through things like butter, then the doublebladed lightsaber would be unuasble for anything other than twirling over your head like a baton. If you actually used it like a stave, it would cut you in half at the waist.
Darth Maul may have made it's use look cool, but try to make those moves and see how many times the blade part would contact your torso, leg or arm.
But I guess I'm trying to use logic in a fantasy world, so how pathetic am I.