I changed mine over after commuting with standard left-front setup for two months....two months of brake hard, let go, signal, hand back on, brake hard again, let go, signal again, etc.... dangerous, especially downhill! not to mention the fact that I'm pulling my daughter in a trailer behind me so stopping distance is greatly increased due to the increased momentum. I did the switch to right-front and will never go back. I suppose I could have just started signaling with my right hand instead, but that's illegal.
Allan