out of interest, why do you feel you'll want to switch to playing left handed? as a right handed fiddle player I'd have said I use both hands and arms equally while playing (albeit in different ways). Although obviously I'm used to the way I play and having done it this way for 23 years can't concieve of switching, each arm has had to learn it's own set of specialised movements in order to play and I don't _think_ that being right handed in normal life means that my right hand is naturally better for bowing with, or my left hand better for fingering with. I'd be interested to hear other opinions though...