I would have to say that as a lefty I was never very fast at cursive writing. Once I got to high school the teachers didn't care anymore so I started printing again. Now my print is much faster than cursive.
It's gotten to the point that the only thing I can do in cursive is my signature, and it's full of spikes and straight lines more reminiscent of print than the smooth flow of true cursive.

This is exactly what popped into my head when I first opened up this thread.