I guess I'm the opposite of everyone on there. I've been on two dall hunts, and if I were to go again I would seriously consider just taking the Yukon pant. I think a lot of it is going to depend on how often you're going to be wearing the rain pants. On my last hunt we were in our rain gear every day, and after the first day I got rid of my regular pants and just went with the rain pants the remainder of the hunt. In the early mornings I'd wear merino bottoms under them, but once I started moving I stripped them off. I was wearing the Chugach pants and was able to zip the side zip down from the top if it wasn't pouring rain and I started to heat up, that helped a lot. I got way too hot trying to hike with the rain pants and regular pants underneath.
I have another friend who's been on a ton of sheep hunts, and after getting home last year had this discussion with him and found he only takes rain pants on his hunts. It's probably all personal preference. Depending on what it's going to take to get to your base came, take both and you'll just see what you end up liking for yourself.