Funny you say that, I had original had a spot for ".22 LR: Ruger 10/22. Marlin Mod. 60 or other 22 platform". I felt there really is no wrong answer just preference for what one would grab... I think I talked myself out of adding it for I figured that not enough folks would fall back on a 22 platform, even though it is a very universal & dependable caliber choice.
Silly as it might sound this is the .22 I would carry. No mags to lose and does not take up much space.