After getting a SS/Energy brute up to 31 in beta I decided to go with Dark/Energy for live.
I noteced that with my beta brute he could run forever with stamina and end drain and the only thing slowing him down was the lack of some kind of heal. Also in PvP my targets would constantly run around not standing still long enough for me to gets some hits in on them. I figured that the heal and fear from the dark melee set plus the -accuracy from the attacks would go well with energy armor being a def based set.
Not sure if I'm going to get the end drain in dark melee and I'm definatly skipping conserve power. Having 4 ways to get back end would be alittle overkill.
