I am ambidextrous - I use my left hand for everything but writing; I have always used a regular sewing machine, and even on equipment that are for righties only, I always manage to use my left. I bought a rotary cutter that's strictly for left hand users only, but I can't get the hang of using it, I do much better with Olfa or Fiskar's rotary cutters. Same thing with scissors, I use Fiskars soft touch with either hand.