Thx, Clifton and dynarider. I was originally looking at SKS Commuters, but was convinced by other BFers with experience with each to shoot for the moon w/ the Cascadias and ask for the Cascadias... I think I'd probably rather change rear tire size to 35s to make Cascadia 45s work. Like I said, I need a new rear tire soon anyway... And sticking with the Cascadias, the next size up for a 700c wheel would be the 65s and those, based on a rough measurement, would not work on my bike w/o mods.

I've even been thinking about going as narrow as 32s once I've lost some more weight, and for 32mm tires it sounds like the 45mm fenders would be just about the perfect width for complete coverage.

BTW, do studded tires have a different/wider/narrower even(?) spray pattern than standard city tires w/ siping of the same width? It seems like they might, b/c of the studs, but I could be completely wrong. Just curious...