This actually my general utility bike -- for rain and other slop. I don't know where the rear trunk is. I almost always have it on -- especially in cooler weather as it's great for carrying extra / unused layers.
I just put on a set of Kenda Kross Supreme tires but wish I had put on some studs instead. Maybe next winter.
... I love those fenders... They really make a difference when I gets wet and sloppy.