The Spotted Cow by New Glarus is meh. It's ok for what it is- a cream ale made with "farmhouse" yeast?- but it's not that great. The problem with getting it is that it's only available in Wisconsin, and not distributed out of the state at all.
I'd suggest that if you want to do a swap, to swap for other New Glarus beers like Fat Squirrel, Belgian Red, etc. They really have great beers.
I can swing by the store tomorrow if I get a chance, if you don't get any other takers. I'm judging a beer comp in Wisconsin tomorrow.