Thanks all, for suggestions so far, main concern is mud, snow secondly, but definitely looking for a tire that will clean itself of either, and get good side bite for turning. I don't put a lot of miles on the truck, and dry pavement/noise/etc. are not a big concern. I'll look into suggestions so far, much appreciated.

"The day I went to work everybody showed up to watch Johnny Luster work. Well, they had a wheelbarrow there, and said I was to push that thing around all day. I looked at it, then turned around and headed for the mountians..."