I play with a 2.1-2.2k rogue/druid on Whirlwind, we run the Dreamstate/resto spec, a.k.a. restokin.

Warrior/healer has varying degrees of difficulty based on the healer type, and of course, player skill. Pally/warrior should be very easy. Your druid is a pally-destroying machine, and if you're shadowstep, so are you. Get on the warrior, sap pally first if he's not using BoSac. Use your serrated blades to your advantage, and keep up rupture on that warrior, use ghostly strike/evasion early on, so your druid can throw up insect swarm/moonfire DoT/a couple wraths/cyclone chain on pally. This same strategy applies to warrior/druid, and (lol) warrior/priest. By doing this, you put the enemy in a defensive place, where they have to dump mana, or throw on a shield (effectively doing less dps to you, ergo saving you mana). From here it's the PvP equivalent of a tank n' spank.

Warlock/Healer should be easy as well, it could be a skill issue on the part of your druid, or yourself. I'd recommend sticking to the warlock, setting the druid as your focus target to watch his cyclone casts (if you see 'em, vanish or cloak), and generally doing your best to stop the lock from doing anything but instant casts. Your druid should make love to a pillar, keeping insect swarm/moonfire on the pet (melee it if he's omen of clarity/moonkin form). He can even cyclone the pet if you've got the lock in a low spot, or a long blind on the enemy druid, that'll remove SL long enough for you to get some heavy hits in. Eventually the pet will fall behind (since you're druid is LoSing it's heals), and you can get some drinks in. This fight is all about freeing up your druid to drink, and not letting theirs do so. Once the lock is OOM, he's borrowing mana from his healer, stop the healer from regenning while yours does so unhindered, and it's GG. Same goes for druid(or priest/hunter.


general notes:

As ShS, make sure you have a focus shadowstep/kick macro.
Focus blind is useful as well.
Know the difference between zerg dps mode, and saving your energy to kick/gouge a fear mode.

As we get higher and higher resilience I'm beginning to rethink a lot of my itemization options and I'm thinking about dropping the pvp neck/rings and possibly some other pieces for some more offensively oriented pve pieces. The reason i'm mention the neck and rings specifically is they are two pieces which lack agi. Stacking agi shows increasing gains, obviously the more crit you have the more valuable ap becomes, and the more ap becomes the more valuable crit becomes, thus we all know agi can be a wonderful stat to stack on gems/enchants. Avoidance also shows increasing gains, while its usefulness in pvp is subject to debate; for me it is just icing on the cake.

Specifically I was considering saving for Angelista's Revenge/Signet of Primal Wrath and grinding for Shattered Sun Pendant(unfortunately i'm scryer, from what i've heard the aldor neck is far better, I also don't have access to kael/brutalus necks or i'd probably use those over it) instead of using the S4 equivalents when they come out. Is anyone else thinking the same?

How good would that [Shard of Contempt] really be? Players can not dodge from behind, casters wont parry while casting(and usually have very low avoidance anyway). it does help against warriors/other rogues yes, but you should always try to fight them from behind if possible. I dont know how good the proc is, but I feel that trinkets that have +ap on activation might be better.

What ShS lacks in pressing 2 buttons in succession and getting huge numbers you make up for in mobility, survivability and personal utility. While Mutilate has more burst from yellow hits, ShS has the utility options to make more burst opportunities - which totally makes up for the lack of straight up big yellows.

With resilience remaining constant, and crit capped, and the gear gap for straight pvpers and pvers who pvp being the smallest it's ever been, ShS has gotten better and better. I've posted a couple times about how Disc Priest/ShS Rogue doesn't work unless you're raider, but even that has changed with badge vendors opening up and a couple ZA pieces here and there. Smart players are doing better and better as the learning curve for becoming a good ShS rogue is higher than other specs, but you can see the results.

Get EA up, drop a point or 2 on SnD and communicate with your partner to get a CC chain going. Once that opportunity shows itself you'll be able to capitalize a lot more often with the lockdown options that prep brings. the ability to stay on target with ShS, along with punishing white damage and quite larger yellow hits on low hp targets. Mutilate is still a one trick pony, so is 41 in combat. If you're honestly not trying to get better at being a ShS rogue, it is my feeling you're capping yourself on what kind of ratings you can achieve, as well as hurting yourself in the long run of rogue PvP. It's clearly impossible to tell what Blizzard has in store for new talents in the expansion, but I have a feeling they're going to lean on Subtlety to be the main focus for PvP options.