I've hunted with Nathan twice, & he is a very serious & committed guide. That is what it takes to be successful hunting mountain sheep, As we say, "it ain't for sissies!"
Nathan is concerned about his hunters success & safety, and it shows in his effort & conduct. This is important when you are often pursuing game in places where man doesn't often tread ... places where you have to adapt, improvise, & persevere. It should still be fun! That is a big part of being a great guide.
Also, it is a spiritual thing for those who really "see" the mountains. Nathan gets the spirit & respect of the mountains & for the harvest.