Libba Cotton also used to play 5 string banjo upside down, picking the fifth string with her index finger - awesome stuff. My friend Mitch Proctor (of R Cajun and The Zydeco Brothers) plays guitar, fiddle and mandolin that way, all beautifully. It must save a lot of bother buying new instruments if you're left handed. He's a bit single minded - when he comes to our Old Time session in Sheffield (UK), he won't play any Cajun tunes, because he's "got his Old Time head on".

Cheers
Ray