Not as cool as light bars
I like em - though they can look a bit weird under certain circumstances.
They don't belong on a rock mashing monster - but I think they look great on a backcountry rig with a few packing backpacks up top.
I don't have a roof rack because I'd mash it on the rocks, but I do have a mountaineer rack: http://4x4tj.com/albums/070707/conte...732_large.html
I got it mostly for camping and trips - specifically my summer trip to CO to cool off. Fits EXACTLY all the stuff needed for two people to camp with comfortably. Perfect for long road trips too - the trip to CO took 11 hours each way.