Whistling Wheelbarrow, indeed, was the alternative moniker. IPEC, in Oz, operated a -101 and a couple of -222s for quite a while, in addition to a couple of DC9 freighters. The Argosy was not a good aircraft to fly in trail with as the booms tended to do quite a dance ....... but, for the route distances involved, it did a sterling job as a freighter.
Armstrong Whitworth AW.650 Argosy (IPEC) - The Little Aviation Museum