I'm left-handed but I'm also somewhat ambidexturous.
I'm a sailor, and in sailing you cannot favour one hand - you have to learn to use both equally as well. For example, if someone threw me a ball, I would raise whichever hand it was closest to in order to catch it. I can play tennis etc with either hand (often instead of doing a back-hand shot I'll just swap hands, lol).
Also, when I was at primary school they never had any left-handed scissors, so I had to learn how to use my right hand for that. Now I always uses scissors with my right hand, just out of habit.
But yeh - go the lefties!!!!!!