I've also switched my US-standard (l-f, r-r) to right-front, for most of the reasons stated in this thread: I want my right (dominant)hand controlling the primary brake; when I use hand signals (with the left hand) I want control of the primary brake; I want consistency with motorcycle brakes. As already stated, the front brakes are primary in cars/bikes/motorcycles because of weight transfer; under hard braking, the rear brake is doing virtually nothing. A little technique is all you need to keep from pitching over the bars. I learned my lesson when I was about 5, and haven't done it since. (I graduated to more complex forms of crash).