I was thinking of building a super proc build for something different to try, mainly in vMA for my stam characters; but I have some questions since I don't normally play stam DPS and these are not BiS for general PvE. I'm not looking to do trials with these sets, just vMA where burst > sustained DPS in the majority of cases. Plus I'm so bored of twice fanged + VO :P
If you don't know the answer, please don't say how you think it should or probably works :P I'll test the sets myself if I need to, but if someone has already done the work and is willing to share could save me a bunch of time.
Sheer Venom:
Viper does about 14% more DPS, but is melee only, so might be worth it in vMA since it can proc with bow only.
I happen to have lots of good traited weapons from grinding Scathing at one point, so love to figure out how to make this good

- Do dual weild skills proc this because of the dual wield passives?
- Does it proc on multiple targets with steel tornado or if you venom arrow multiple people? I would assume not since viper doesn't work this way but hey
Widowmaker:
- If a poison has multiple effects, does each effect trigger the proc?
- I read someone saying that if you have a front and back bar poison, you can proc from them both (aka no cooldown on the proc itself, just the poison), is that true? Maybe a dumb question, I never actually bother to use poison yet since I rarely PvP
If multiple effects on both bars can proc it, it might be the easiest way to pile up some insane burst over 5 seconds or so, since nothing in vMA will purge
This is the one I would love help on the most, because I don't have a full set right now, and I don't want to grind it if it's terribad
Poisonous Serpent:
This one is more opinion based instead of factual.
Seems like if you are good at light attack weaving this could out DPS Viper (50% proc chance on light attack if target is poisoned), so 6800 every 4 seconds instead of 6400 assuming you are consistent with you light attacks. Is it just that the RNG and pre-conditions make the nominal average DPS increase not worth it? Still maybe worth while for vMA for being able to proc from bow only.
If anyone has tested these things before I would love the input!