Again with a crew of 'Sumo Soldiers', It would also always be a 'masked battery' on the field. The enemy wouldn't be able to see the gun during the loading process until the #1 and #2 stepped aside so it could be fired. It would also be the only battery that wouldn't have to call for a Horse to move the gun. Your crew would simply 'harness up' instead of using the prolong. Just think of the advantages you would have as a 'pack howitzer'. And would the drill master be impressed when your crew could do the manuel of arms with the gun tube.