Cyclocross levers on riser bars?

I ride a single speed "track bike" both long distance (relatively: 20 miles so far...I hope to do much more) and around town on sidewalks. I prefer drop bars or bullhorns for long distance and wide riser bars for going to the grocery. I really like the feel and look of cyclocross lever on bullhorns. Is there any reason not to use them on riser bars?