I don't really have any of the exotic steels you mention as I tend to stick with 1095 or 01. With both of those steels I've found that I can maintain an edge that will scrape, not pop , hairs off for some time by just stropping my knife on my pant legs etc after each use.
Just noticed you are talking mainly in relation to Scandi's.....most of my main users are flat/convexed as that is a grind I find easier to keep sharp.
I should add that I've had knives that scare the hairs off my leg but still suck when it comes to carving wood so I wouldn't use that as your yardstick.
If your knife is still performing as you need it to making fuzz sticks and carving trap triggers etc then don't lose any sleep over it.....just pack a Mac3 for those troublesome hairs !