I'm left handed, but actually fully ambidextrous. Not to the degree of Woodrow Wilson mind you, who could write in Greek with one hand, and Latin with the other, simultaneously!
I play the guitar right handed BTW. It has always baffled me why other South Paws choose to play with the guitar reversed, when the stronger hand in our case is the fretting hand with the guitar held in a right handed fashion.
Cheers for the "sinister" reference, a word that originally meant "left handed".:beer: