I converted my old mtb into a commuter bike a couple of years ago and was using it as such until today.
It's a 14" Giant Rincon with slicks, lights, and most of a bike computer on it. Here's a photo
Stolen from outside of an office at 4th St. [HTML_REMOVED] Yew in the Kitsilano area of Vancouver (from the 2nd floor of a courtyard behind the VanCity branch there) between about 5:40 and 5:41pm. Yes, folks, it only takes a few seconds.