probably a new question

Hey guys i am looking at getting an 08 ISF soon and had a question that i dont believe anyone has ever asked. First i only use my left arm, So i feel like up-shifting is more important than down-shifting so is there anyway that i could have the left paddle made to shift up and the right one shift down? My brother had a IS350 and i drove it a few times with the paddles and i could do it but it was a little awkward to do one fast accelarations. So i dont know if there is something that could be done with the wiring or if you could just flip the paddles from one side to the other. Thanks Guys! My name is Jeff by the way, i am obviously new to this site!