Another vote here for the Tamrac Zipshot. I have the shorter Zipshot Mini, which I carry in a water bottle. The full size Zipshot is closer to the height of a normal tripod and should still carry easily in a pannier.
I originally bought it intending to use it with my Powershot, but I've been surprised to find it will support my DSLR, as long as I am using a lightwieght lens.