The worst thing about clipless shoes is the slipperyness. Last night I fell down two seprate staircases (before I started drinking, ha!), the first while carrying my bike over my shoulder. It was a mess. The worst ones are steep and narrow with linoleum steps and the aluminum edges. they are my enemy. I fell down the front stairs one morning before work, what a way to start the day. Before you start laughing, I've seen at least one other person crash down my front stairs in cycling shoes (although they were drunk). Also, it sucks to wear thouse things if you're going dancing. I always end up taking my shoes off at parties or keeping a pair of chucks in my messenger bag.