Weapon Swap Interaction with Walking Calamity and Passive Bonuses

I still haven't fully figured out how weapon swap works in some cases with tree points and supports/skills with durations and honestly it's hard to test in game with the number of temporary buffs going on and all the action so I'm wondering if anyone knows and can save me time testing.

I'm using a talisman and have it locked to both weapon slots. I have walking calamity set to be used with weapon set 2 and I use maul/furious slam/ferocious roar on weapon set 1.

It's difficult to understand what kind of tree passive nodes are able to be "snapshot" when activating walking calamity, and which are not, since what usually happens is that I activate walking calamity (weaponset2), and then immediately go back to mauling/slamming (weaponset1).

I know that duration nodes ARE snapshot. If I keep the duration nodes on weaponset2, walking calamity will maintain the benefit of the increased duration nodes even while I'm using my weaponset1 skills.

Questions I'm wondering if anyone can help me out with:

1. If duration nodes are snapshot-able, are other nodes snapshot-able? If I allocate something like "increased fire/elemental damage" will this apply to walking calamity for the duration of the skill, or until I "switch" my weapon by using a skill that is set to use weaponset1?

An example: If I have "increased skill speed" allocated to weaponset2, will I experience a benefit in the form of a faster activation of walking calamity AND an increased rate of meteors falling for the whole duration of the skill, even if I switch back to weaponset1 skills immediately after activating?

2. Same question about passive character buffs like "increased stun/elemental ailment threshold" or "increased freeze buildup" or "increased armour" or even stuff like global penetration or rage on hit - which ones will remain active for the duration of the skill, and if they're active will they only apply to the skill - not my character?

Example: If you allocate a node like "Cold Coat" to weaponset2 that gives your skills increased freeze build-up, and your character increased freeze threshold + reduced freeze duration on you, and then use embitter support in walking calamity, will it benefit from increased freeze-build up from this node for it's entire duration even if I switch to using weaponset1 skills? Does my character also retain the increased freeze threshold and reduced freeze duration for the duration of the skill?

3. Will the answer to any of the above change if I'm not using the same talisman in both weapon slots?

Side-Question:

I can't tell if Hourglass Support is working with walking calamity or not. It doesn't affect the numbers in the in-game skill sheet other than adding a cooldown - while the cooldown is shorter than the duration of the skill. It feels like it should be free 30% more damage, but I can't verify this.

Interesting note:

When I socketed Rageforged support into walking calamity, it tried to burn 10 rage every time a meteor fell. I originally assumed that this bonus would be "snapshot" when activating walking calamity for a one-time 10-rage cost, but apparently not. This is what led me to questing which other things are/are not being snapshot and put me down this rabbit hole.