Haven't even seen one, even when I was living in MT...
Saw this a few days ago, and I figure most bike/moose confrontations would be similar:
http://arcticglass.blogspot.com/2006/07/fed-moose.html
My dad used to do a lot of work on semis when I was younger, and told stories of how sometimes drivers would get stranded by them. Not from hitting them, but from stopping and blaring the horn. The moose would get angry and tear up the whole front end and radiator...
Don't know if that's true or not, but I don't think I'd want to take my chances with an animal that has a reputation for attacking semis...