You know, I think there's just so much discussion out there on what the right rig actually is, when in fact, it's all of them. If you can spend mile after mile comfortably in the saddle, and it makes you happy, you nailed it. If anything, you could just add it to your quiver of bikes... can't have just one, right?
The Krampus is a great ride, maybe not fast, but it probably checks a lot of the boxes on the harsher/softer side of the terrain. Keep the Niner for fast touring, gravel and hardpack. If you really only want one, I'd still keep the Krampus and get a milder/lighter/faster wheelset.
Disclaimer: I've never ridden a RLT9, and my opinion could change dramatically if I had.
Good luck, bud.
Steve