I commute on a KHS CX200. It's a cross frame, built up with cross wheel/tires, and fenders. I carry a backpack, but I could put a rear rack mounted to my seatpost. I love my commuter. It has a knobby tire because the roads here are awful and it help smooth things out and helps with the gravel. It's still makes for a quicker ride though because they're skinnies. I've found the cross setup to be ideal for the type of ride I have.