I have a NP Mega for my alpine trips and it is great.
I have a cross bike for commuting, fire road and some singletrack action for a fast blast (love it!).
I have a Krampus that I sold the FS 29er, and stripped the HT 29er to build - I love it, most used bike. (even with freak H-bars - love them!)
But now I am obsessed with a Fat Bike, particularly the carbon beargrease. To the point where I would like to ride PPdS on it this year.
But it will not leave my head, and it would render the Krampus useless, and is likely not the best in either proper winter slop conditions, and not the best for summer dusty and and and,
maybe I should just grow a beard for a while first?