Yep. It also gives a little mag 2 hold resist.
It was used a lot back pre IO days, but not nearly as often after.
They nerfed it as well the KB use to be 10 they reduced which is why people just went IO route it was the smarter option less endurance and higher kb resistance after the nerf
I had two dark armor scrappers my first was dm/da which i started in i2 shelved because the armors did not stack initially yes I know stupid when everything else did (early devs did some really stupid stuff) leveled him later and got to 50 in i5 also had a spines/da.
I loves /da but on scrapper runners gets frustrating if you going to go dark armor and are doing a damage set go brute if you want more survivability go tank both have taunt auras which makes it easier to melt them with your damage aura. IF I build another one I am going brute or tank
On the auras cloak of fear gives a -tohit; oppressive gloom makes the guys wonder away and takes hp (not enough to matter)
Pros and cons of the two control auras
COF
Pros: does a better job of locking mobs in place and mobs do not wonder sometimes they run from fear effect (but not often) and -tohit
Cons:need to almost 6 slot the power low acc; high endurance burn
OG
Pros: High acc; low end cost default slot and it rocks out of the box and needs nothing else is needed the only reason to slot past the first is for set IO bonuses
Con: enemies wonder away; -hp
If you want to go something close to the concept of savage I would go street justice or SS brute or tank
I was able to level both spines/da and dm/da pre-io days with nothing but SO's where available until HO at 50 and I ran tough weave maneuvers back then with no issues.
I IO'd them later on a fully top shelf IO build end game rocks and with IO's endurance management is even easier.