Looks like we're cut from the same cloth. I love a wet ride (although not too cold...). We don't have any chalk in these parts (east cost US), but we sure have plenty of clay and boulders that get pretty darn slippery when wet. I'm riding on 26X1.95s which do me jsut fine (6'/190lbs). One thing I really gotta do is get some disks- actually, I'm saving for a new bike, rather than retrofit my Schwinn. In my part of the country I don't see too many disk barkes, even on the seriouis MTBers. But when I was in the UK this summer (Bristol/Bath), I saw tons of 'em. I guess that rainin, misty English weather demands it, huh?
Best wishes for a great season of wet, muddy, sloppy riding- it's the *best*!