irulan- I'm glad to hear you say that you see lots of people on road bikes on trails around you...i guess i'm not nuts....i have seen mostly road bikes. I can see how the grit might clog things up a bit if you want top proformance on the roads afterwards and i would think the componants are different on a mountain bike.
Hmmmm decissions decissions...looks like i'll have plenty of time to decide with all this white stuff building up around here!