I too am a south paw and found the transition from fixed wing to fling no problem at all and like veeany find it more natural .
Ive even stopped playing golf cak handed and got myself a set of left handers and after taking a bit of getting used to has improved my game .
I also have come across quite a few left handed heli pilots , It would be interesting to find out as a percentage how common it is but all internet searches come up with nada (unsurprisingly!) .