How do these boots size up? Are they...
How do these boots size up? Are they similar to Nepal Evos?
I own a pair of Trango Extreme EVO Lt GTX in size 45.5. They fit great. How do Spatnik fit compare to those as well?
The Spantiks fit very similar to La Sportiva's other mountaineering models with a bit more toe box room to accommodate for high altitude/colder weather. I wear the size 44 Spantiks, Batura, Nepal, and Trango and all fit well for their intended purposes.
Your Nepals will serve well as your technical mid-altitude, single-push boot and the Spantiks could serve as an expedition/extreme cold boot.