I am currently running a 7.3FX with Planet Bike Freddy Fenders.
Once December (and the snow/ice came) I went out to buy a set of studded tires. The shop I went to was low on inventory, and I ended up with 1 Kenda Klondike 700x35 for the front and 1 Kenda Klondike 700x40 for the rear, mounted on a second set of wheels.
The fender in the front still works fine with the 700x35 studded tires, but I had to remove the rear fender to fit the 700x40 in the back. Potentially, switching the tires around might've allowed me to keep both my fenders, but for now, I am simply running a seat-post mounted rear fender.
Overall - I love this bike as my commuter. For the summer, running the PB fenders and the stock 700x32 Bonty Hardcase tires creates a fast, weather-proof commuter.