veeeeery interesting. With my new speedmaster fender, I really think that driving lights are a little too full dresser for the look ya know? And while the oval driving light might look a little funny from the front, at least the profile will remain! You could even recess it back a little to make it less prominent, ya know? How will you do the wiring?
P.S. Changing the bulb does make a world of difference too...