I use a combination of First Lite and Kuiu for western hunts (primarily Wyoming):
FL Wick Short Sleeve (Base Layer)
Kuiu Peleton 240 or Strong Fleece 260 (Mid Layer in Cold Weather or Outer Layer in Moderate Temps)
Kuiu Super Down Pro Jacket (Insulation)
In addition, I take rain gear with me...
Great cartridge but brass is difficult to get ahold of. Rl23 shines as does RL26 with the heavies. The Berger 175 EH and 180 hybrid pair well with the 7 SAUM
I have the Swaro 15’s and are optically the best I have ever used. I have also tried the Zeiss Conquest HD 15’s and while they are good for the price point, the Swaro’s blow them away.
I think the Swaro’s are the optimal fit for glass quality and FOV.
You’re gonna have to try them both and use whichever frame fits you and carries the weight the best. I wanted to use SG as I like their packs but actually found the Exo frame to feel the best on me with 40-75 lbs; so that’s what I use.