I bought this one for my in-the-dark commuting:
http://www.nashbar.com/bikes/Product..._#ReviewHeader. No pockets, and the velcro seemed to loose some of its sticking power sooner than I would have expected, but I'll just stitch some new velcro on if/when it becomes necessary. It's very comfortable and really shows up good in the dark. Folds flat and lays in my rack bag when I don't need it. I like the reflective X on the back. Just seems like it would get attention quicker than two straight lines.
Walt