on a whim today i bought a 6 dollar set of used risers from my local bike co-op to put on my fixed commuter. i had flop/chop horns on them before. in my limited experience riding around for an hour or so, i liked the upright position and i felt like i had more control in hard cornering. it felt a little less stable during steep climbs but i think it'll be good for my short (3 mile) commute. for extended rides the lack of hand positions would definitely be annoying and trying to tuck myself in while riding into headwinds felt a little unnatural but for less serious kinds of riding, i think risers work great.