I've been using the wand of malice for about 2 weeks now, the only time I have the hate be a problem is if I'm attacking a mob the secondary tank is holding and that tank is trying to hold multiple mobs. I will almost always pull agro if I'm not careful in that situation.
If it's the MT I basically never pull hate.
Except on those silly patrons in hate that split after you "kill" them, I probably die to those more than anything lately (and I die a lot!). When it splits any active dots and all the procs firing because of them *continue* onto the split mob yet hate starts all over so in those first few seconds I'm getting a lot of hate even if I completely stop casting.
I think I'm seeing around 300-400 dps from it generally without a troub in my group (doing 3-3.5k dps total on average). Not an exact number as I'm just going off memory. 900-1000 int depending on buffs, fabled gear with leg/treas stuff mixed in that is illy specific

Without a troub i'm forced to idle a couple times during longer fights while waiting on recast timers.
Our troub has been gone for work since I got it so no idea on if it'll get worse once I have jester's cap on me
I think that's everything I can give on it. Definitely a sick item for a fast casting chanter

Wonder how long till nerf *ahem* fix since it's basically a weaker praetors guard (pre-nerf/fix)
Crespin