I did also a few days packback hike in Varanger inlands. It has been years since I have carried a telephoto lens on a hike, but this time I wanted to test. I had E-M1 Mark III + 300/4 + MC-14 attached to packback straps in front ready to shoot and 7-14/2.8 in packback for scenery photos.
What other camera formats could offer this kind of focal length, mobility and lightness? And you don’t have to worry weather conditions.
Gear: E-M1 Mark III, M.Zuiko 300/4, MC-14, 7-14/2.8