From my experience with DRK, I'm going to say it's damn near close to borderline.
The only thing that makes it balanced is the total lack of utility when off-tanking. When it comes to main-tanking though, hoo boy, I highly doubt you'll lose aggro ever, period.
The only thing that makes it balanced is the total lack of utility when off-tanking. When it comes to main-tanking though, hoo boy, I highly doubt you'll lose aggro ever, period.