who says you cant have both.
Besides it is removable and primarily for me moving all the time. just like the hitch carrier.
It also has a deflector shield in front that will help with down force
the only glitch is the extension section does not have the extra four bolts you need to add it to the basket but a minor thing that a hardware store can fix. other wise it is a terrific setup. i dont know when i will put it on yet.
www.amazon.com/Thule-A21030-SportRack-Roof-Basket/dp/B000UUK262/ scroll down for extension.