Yeah, I cannot think of a more appropriate piece of clothing for an Eiger Sanction

Somewhere in one of Colin Fletcher's books he discusses "new tech" warm vs "old tech" warm clothing. I will see if I can find the quote as it really is a good one. Old wool sweaters fall into that comfort warm category that the lightest highest tech plastic fleece seems never able to fill.

A Dachstein sweater is one of those sweaters that is near perfect for sitting in a duck blind or crouched in a snowy field taking photographs of animals. Not always perfect in the pack, but a damn fine "warm" when the time is right.