Planet Bike fender on Specialized Sirrus
 

I had to cut a little trap door on the Planet Bike rear fender so that the front derailleur of my Specialized Sirrus would have some room to poke through... the chainstays are short, and the chainstay bridge is consequently too far forward for the fender to clip-in and avoid the derailleur. But, after some sweating with a hobby saw, it all came together (whew) :o