Looking at how venomous wounds works, it is being multiplied by assassins resolve in beta currently with switching between swords and daggers there is exactly a 20% difference. With doing tests between set attack power and mastery amounts the math I saw for it including the damage from master poisoner came out to be VW=(1.26*(1+mastery%))(748.243+.168*AP). Trying this on current numbers worked out along with matching the values in the character sheet to the tool tip damage while factoring out master poisoner bonus along with matching those with actual seen values on raiders dummy. Sorry not the best with spread sheets so will post numbers used below. If there's more info that is needed that I omitted please ask. All numbers are tested at level 90.

AP Mastery% Target Damage Tool Tip Damage
739 28% 1406-1407 1340 (daggers)
739 28% 1172-1173 1116 (swords)
2687 28% 1934-1935 1842 (daggers)
2687 29.07% 1950-1951 1858 (daggers)
1661 28% 1656-1657 1578 (daggers)
1661 28.43 1662 1583 (daggers)
1661 28.43% 1385 1319 (swords)

From the looks of it poison's are applying at the amount on the tool tip with 50% chance per hit for assassination and 30% chance per hit for combat and at the same rate between weapon speeds and haste rating.

Assassination
1.8/1.8 speed 15.78%/2208 haste 50.4% proc/hit
World of Logs - Real Time Raid Analysis

2.6/1.8 speed 15.78%/2208 haste 52.898% proc/hit
World of Logs - Real Time Raid Analysis

Combat
1.8/1.8 speed 15.78%/2208 haste 31.20% proc/hit
World of Logs - Real Time Raid Analysis

2.6/1.8 speed 15.78%/2208 haste 30.19% proc/hit
World of Logs - Real Time Raid Analysis

1.8/1.8 speed 17.90%/3053 haste 31.15% proc/hit
World of Logs - Real Time Raid Analysis

Regarding Elemental Force. It appears to proc as a spell using spell hit/crit mechancs as indicated in this log. That log was done at 7.63% hit,1.84% expertise (if I remember correctly), and 9.48% spell hit (all values taken from character sheet).

Another note relative to level 85 content. Throw and Deadly throw can both proc vial of shadows. Shurikan toss can as well, but it's not really relevant at level 85.

Dual wielding with Windsong: The other weapon basically just increases the uptime, offhand procs will refresh a mainhand proc (in other words, there was never more than 3 buffs up at once).

Dual wielding 1.8 daggers, autoattacks only, no poisons: log
Single wielding a 1.8 dagger, autoattacks only, no poisons: log

Both tests were run for the same total number of hits, noting the difference in uptime and similarity of number of procs.


Here are some questions not specifically asked that I investigated but may be important and/or interesting to know:

Combo point behavior: Premeditation does NOT add any anticipation charges. If used at 4 combo points, premed grants one combo point and the second does not overflow into an anticipation charge, it is merely wasted.

I also noted the timer on slice and dice to interpret how SnD behaves with respect to the "dot extend" mechanics of envenom and revealing strike. What I have found is that SnD follows that behavior with a 2sec tick timer. I used slice commander addon and noted buff timing. I found that if I refreshed with a 5pt SnD at 2.9 sec, it was extended to 36.9sec. If repeated at 1.9sec, it was extended to 37.9sec. This is not unreasonable given that SnD gives energy at 2sec intervals for subtlety (which was the spec I tested it in). It may be worth confirming if it behaves the same way for combat and assassination.

Edit number x: I tested the heal behavior of leeching poison and how it interacts with bandit's guile. The question I was wondering was if the leeching poison heal was derived from the base weapon swing before applying bandit's guile, or the final weapon strike damage after applying bandit's guile. The leeching poison heal is based on the weapon strike damage AFTER bandit's guile is applied (so basically you get 30% bigger leeching poison heals in deep insight than you do at no insight). Also wound poison is benefitting from bandit's guile. I have not tested deadly. There is also a slight delay from the weapon strike and the leeching poison heal it triggers.

I used an item level 4, 1.6 speed dagger with a damage range of 3-5. I unequipped all items that proc increased agility/ap.

Snipped log (for readability), with a single typical melee swing, leeching poison heal & wound poison proc per insight level:


Edit number x+1: Recuperate can proc windsong. I have not observed any procs from shiv, nonlethal poisons, or deadly poison dot ticks, still need more testing on poison proc behavior though.

Just tested it for Assassination and it behaves the same, whether refreshed by applying SnD or refreshed with an Envenom. Got to aim for that 2s window to avoid losing energy on SnD (obviously it won't happen that often for Assasination rogues, who refresh SnD for free all the time).