My impression is that fluor mainly shined in wet or dirty conditions, and weren't that big of a deal in colder temps other than durability. At least I've had problems with -20 snow all my life, so even before the prohibition, heh.

Maaaybe TS would make a difference, but no way I'm shelling out that kind of money for a normal day in the mountains. Mostly using PS6 as a base, and then perhaps something more specific for the daily conditions if warmer, but seldom anything more fancy than PS, maybe HS for a long trip.