Originally Posted by Sprocket Man
My wife has them on her triathlon bike and she really likes them. She hasn't experienced any problems with excessive flex, but she's only 110 lbs. so who knows? I'd have to agree with those who've said that hand positions are limited. I wouldn't feel comfortable holding on to the flat sections on the bar - the edges are too thin to grasp.
We put some regular Cane Creek brake levers on it and it worked fine. The levers were about $40.