I wouldn't switch, but thats because I've developed a kind of personalized typing stye, where I don't keep my fingers where I was taught to (over the center of the keyboard). I keep my fingers at the bottom of the keyboard and reach up to type keys.
I do this mainly because it keeps my fingers from getting sore. My lower two digits are extrememloy prone to aching, and typing with them kills me. The intewresting thing is, even typing with a mere 4 fingers and two thumbs combined, I can easily keep up with my peers as they use the standard typing (One reason why I believe the 7% increase in performance).