Wondering how many artists around are ambidexterous?

How do the drawing/writing abilities of each hand compare? How did you come to be ambidexterous, was there much effort involved?

Just curious about how it has been for other people. It is looking necessary for me to become more articulate with my left hand. Practice has been interesting so far.. frustrating at first. Drawing with both hands at once is also weird but strangely effective O_o

I'll post some pictures soon...