I work in a bike shop. I do tend to caution people new to clipless against the campus pedals because if you want to clip in, they flip over, and having to look down at your pedals at intersections can cost you--I definitely don't talk about the weight! Provided that you're aware of the tendency for them to flip over and it becomes instinct to turn them so that the clip-in mechanism faces up, they're a viable option. (I still tell people to consider a dual-sided (ie, you can clip into either side of the pedal) SPD-type pedal as well if they're thinking of the "campus"-type pedals.)