Sav,
One of the pilots a couple of courses ahead of me got his wings but never made it through operational training. He got his CPL and spent a few years in Nigeria flying Bell 47Js before returning to fly the Societé Nationale de Constructions Aéronautiques du Sud Ouest Djinn, crop spraying. I thought it was with Dollar Helicopters (but it may have been BEAS). They used to have one at the factory in Marseille and one of the technical instructors there told me that it was nicknamed "Le siffleur", presumably because of the sound of the air as it exited the blades.
I last saw one in the Fliegermuseum at Dübendorf airfield when I was visiting Zurich in 2010.