Re lefties playing right-handed: I'm a lefty, with a very strong sense of my left-handedness, and holding a guitar in the normal right-handed position felt very awkward to me. I play lefty guitar, which suits me fine but limits my choice of instruments noticeably. When I was first looking for a lefty guitar, I went into a music store and asked if they had any. The clerk said "No, but it's easier for you to learn right-handed because your left hand will form the chords". My (unspoken, sadly) reply: "Well, then why don't all the stores carry mostly left-handed guitars so that all the right-handers can have that advantage?"