I've posted a few times on this before, but people don't seem to go anywhere with it.
Here's the relevent scientific background on handedness as related to right/left brain differentiation resulting from evolutionary pressures. Darwin doesn't lie.
http://www.scientificamerican.com/ar...and-left-brain
The super simplified version is that right/dominant lead is better for offense/predator mode. And left lead is better for defense/prey mode.
So depends on if you are in a sporting context, or in a go for broke kill or be killed mode.
Which one do you want to be, the predator or the prey?