I'm new to the site. I plan to begin commuting soon in the Portland, OR area. As you all know, it rains here. YES, I know....it's hard to accept, but it's true.
Anyway, I recently purchased a Jamis Nova cyclocross bike and it comes with knobby tires. My commute would be short in to work thanks to bike-friendly public transit, but about 10-15 miles going home. I'm wondering if, this Winter, I'd be better off to just leave the knobbies on or would I be better off with something like a Specialized (all condition) Armadillo or Conti Ultra Gatorskin.