Dark Embrace is no where near the endurance hog that some seem to believe. It seems comparable in endurance drain to my Shadow Fall. Note I have Shadow Fall slotted with two reduce endurance SO and Dark Embrace slotted with one damage resistance. I have no numbers, these are just what I've observed from usage.
On the other hand, the audio for Dark Embrace is annoying as heck. Kinda grates on ya. It took some close inspection to figure out that the icon is not as aweful as it first appears.
No screenshots, but it gives you a kind of smokie aura and you get an hourglass figure every once in a while
