Infraction: 6. Do not post unless you have something new and worthwhile to say.
Message to User:
Thanks for that lengthy post of unsubstantiated theories and misinformation. Please have some idea what you're talking about before posting next time.
Agi & agi/crit gems and envenom 51/13/7 spec if you don't want to weapon swap
if you want to weapon swap (which provides bit more dps but is a bit tricky at the beginning) with ap & ap/haste gems (note that this is calculated with best in slot gear so can't say for sure if that is the case for lower gear levels too) and envenom 51/18/2 spec. You can learn more about weapon swapping by reading various threads on these rogue forums.
So either I've missed something here or you need to do some more reading. Last I heard, unless you have 4p t8 you strictly gem ap, not agi or crit(?!). Since a large part of Assassinations dps comes from poisons, which is based off ap, ap is the better stat to stack. Also, haste does not affect IP procs so I have absolutely no idea why you'd gem for haste when using daggers. Maybe a slight increase in FA procs but I can't see that being worth it.
Now since the Master Poisoner change, I've noticed not only is the 3+ Envenom a dps loss compared to 4+, but weapon swap really only seems to be worth while if you have 2 of the same OH. The extra ap bonus to Envenom makes its instant damage quite ridiculous. I don't have very good gear (not quite even 2600 gear score) and last night on XT hard mode I was getting 28k+ crits with envenom on the heart (avg Envenom crits overall seem to be doing 2-3k+ more damage than before the change). This instant damage seems to outweigh the slight loss in the buff uptime.
Now as for weapon swapping, there's a few things you need to take into consideration, primarily stat differences on the 2 daggers your switching. For example, if one OH has exp and the other has hit, you could be losing hit or exp and end up missing more just from weapon swapping. Obviously, you also have to look at weapon dps and speed too. If you switch to a 1.8, realistically it will proc IP less because its hitting less in this small time frame. Now I haven't tested weapon swapping in great depth but I've found what works best for me is doing a 4+ envenom (5 preferably) swap weapons right after so even while the GCD is going, you're still getting those increased IP procs, then mut, and depending on how much time is left on DP you can squeeze in another Envenom (remember finishers can apply IP) or another mut if need be. With my gear, weapon swapping is actually a dps loss (I switch from Golem Shard Sticker to Webbed Death :-\ ), so make sure if you're going to swap weapons that it's actually benefiting you.
*sidenote-My guilds raid comp is pretty much whoever is on raids so we don't have any real raid/buff structure so that might produce different results as well.