So far, so excessively humble.
What is amazing so far is that the entire focus is on finding a way to the summit. There are hardly any descriptions of anything else, not even the members of the expedition. It appears, most of the discussion of the actual route is described through conversation between the main team members. And this is where I have a problem with the writing: how is it possible for Herzog to relay all of these conversations held over weeks, without notes or transcripts? For me, this turns the account from non-fiction to fiction right away.
I'm also bemused by the tone: absolute accord between the members of the team, no personal quirks, no doubts, just excessive optimism ... or naivety.