I'm not going to condem it, because I think the Barb can use the boost (that said, it does leave the thaneborn barb hurting in comparison, though they start out with better defenses before the feat).
If one assumes a minimaxed barb (I'd say: Str 20. Barbarians need to hit), it starts out at Scale levels at 1st level -- 10+3 for con, +3 for Hide, + 1 for barb reflexes = 17 (vs 18 for Plate).
At, say, 14th level... 10+7 for level, +5 for con, +4 for enhancement, +4 for darkhide, +2 for reflexes = 32, vs 10+7(lvl)+11 (warplate) + 4 (enhancement) = 32.
Hmm. So yeah, at paragon levels, at least, it's the equal of plate (for an extra feat). That's really good -- though I'll note that if they wanted to, the barbarian could just wear plate (for 2 more feats). That said, one could make an argument that it's intentional -- that the barbarian was intended to be a bit less of a glass cannon than she ended up--the real question is how it works in play.
If one assumes a minimaxed barb (I'd say: Str 20. Barbarians need to hit), it starts out at Scale levels at 1st level -- 10+3 for con, +3 for Hide, + 1 for barb reflexes = 17 (vs 18 for Plate).
At, say, 14th level... 10+7 for level, +5 for con, +4 for enhancement, +4 for darkhide, +2 for reflexes = 32, vs 10+7(lvl)+11 (warplate) + 4 (enhancement) = 32.
Hmm. So yeah, at paragon levels, at least, it's the equal of plate (for an extra feat). That's really good -- though I'll note that if they wanted to, the barbarian could just wear plate (for 2 more feats). That said, one could make an argument that it's intentional -- that the barbarian was intended to be a bit less of a glass cannon than she ended up--the real question is how it works in play.