My two penneth worth; for purely aesthetical reasons the roof spots would look so much better hung under the rack (as others have mentioned). Also circular spots on the nudge bar would look much better than the rectangular ones (they were free after all! £20 for 6 spots!! what a bunch of muppets!)
i made my own in the same style but longer it fits from front to the back not half way and yes it does take extra fuel with the light on , for give me i still can not post pictures , the red one in my profil is my old one i have a 2006 td4 auto but same roof rack and better a frame.