Well, no one's responded to the questions yet but I want to ask another one anyway.

I've read it's more damage to put up the slashing debuff before dots. So debuffs affect dots.
Now I know that dots snapshot buffs. Is the same true for debuffs?

Now this isn't really important for the slashing debuff since you try to always keep up.
It is relevant for Trick Attack's Vulnerability Up debuff though. Can I snapshot that debuff on a dot?
If not, it seems like a waste to refresh dots within that window.
If it snapshots, it'd be a increase if they happen to line up. If it doesn't, it might be better to Trick Attack after you just refreshed your dots so that you get more direct attacks in.

So does anyone know if dots snapshot Vulnerability Up particularly?