Shouldn't build it...thats the world is flat talk...when folks ask why build it? the response should be "Because We CAN"...that's exactly why. As humans, that's what we do...keep pushing the envelope until something great happens...maybe it is impracticable...so what, keep pressing fwd. If we are to be content...then why did we move on past black powder ball and cap...why gatling guns? Because multiple bbls are better than one...provided it functions that is. The ball and cap was more than anyone needed at the time...quite revolutionary. Lets be content with a 100 year design just because its awesome...no, keep pressing fwd. Besides two .45 holes leek more fluid than one .50 or 10mm hole... ya don't normally need 50 AE or 10 mm velocities on the soft fleshy, ketchup packet, sacks of humans...the slow 45 works great...the more the merrier. Don't get me wrong...I hear ya, the thing is probably obnoxious to carry, and doesn't function well enough to be worth the awkwardness of it... and I personally would probably choose against it 9 times out of 10 for practicability. But...ya have to admit...its still a cool concept...just like overly large and heavy knives.