The only problem I can think of switching is that you may respond with inappropriate pressure to the "incorrect" brake during an emergency. The phenomenon is well known in aviation circles. When the adrenalin is flowing and panic takes over, pilots have been known to perform an action that they had previously mastered rather than the one that would save the plane or themselves. The classic example is what happened when the designers of a fighter plane moved the ejection-seat lever. When it was necesary to bail out, some pilots reached for the old lever position, and as a result, found nothing there, and went down with their planes.
In an emergency, the brain may respond by triggering obsolete motor-neural responses.