I am right hand dominant, but I hold my pencil different. I place it between my ring & middle finger. I've done it since I was little. Due to that, I can also write with my left hand just as good almost. So yeah I'm ambidextrous. I tend to do everything differently though Mum says I need to learn to do stuff the right way. My way is just better than her's
My friend is ambidextrious, and has two different handwritings with each hand. She uses the right when in class to do work and such, and she uses the left to sign papers and bad grades for her mom xD