I think I'd rock a double on my new commuter. But not the big U shaped ones that clunk around. I like the double leg ones that hang together but then hinge out away from eachother to form the V when you kick them down.

But right now I just lean it against ****. With the front end loaded down I feel a double would really save some headaches. And if I ever put a rear rack on and do heavier loads, I think I'd like it even more.