Agreed, Astronomy, that was pretty awesome.
My VERY limited perspective is that of an extra with a light infantry platoon in A'stan, conducting dismounted patrols, and carrying my designated 2x 60mm rounds. Not too big a thing. However, the kid with the mortar, ruck, weapon and PC for the three day mission was not a happy camper. He was carrying more than the medic, and his ruck was ridiculously cumbersome, with the tube strapped horizontally, then vertically, then at an angle, to make it less awkward. I know it was his first time with it, but nobody had any special kit to set it up well.
As Astronomy noted, 1300m is the limit for hand-held mode. So why not a tube and ammo designed for that range? It would likely be carried by a regular troop, so no IDF role and therefore very little need for longer range.