My OCR1 is also a 2007, so I'm guessing the brakes may be the same or effectively the same. I'll need to bring my bike upstairs this evening and look at your pictures to compare, but it very well may work on mine. If I had to downsize to 25c tires I think I'd be willing to do that for full fenders, although I'd probably wait until my current tires were in need of replacement. I should also bring your pictures into my LBS and see if that's something they, or I, could replicate.

One last question: which model Planet Bike fenders are those?