I'm playing a 35 Annihilation Marauder, and as far as PVE goes, it seems a little hit and miss sometimes. Most mob packs I decimate, but the occasional pack will just rip me a new one. Most champions I have no trouble at all with, but if there happens to be a few more mobs, I either have to let Jaesa pick up threat through force camo, or blow all my cooldowns and sometimes a medpac to survive. Survivability seems a tad low, considering my roomie is playing a merc and he never seems to have any issues at all. Although, loading a mob up with bleeds and blowing berserk helps more than you might think.
Overall, I like it, it works well, just wish the damage was a little higher.