When you read this, remember that I am levelling, and do not have hammer of wrath yet (although this could be used if it's on CD). Also know I am judging the community's knowledge as a whole based on the sticky, so if its common knowledge but it's not mentioned there I'm sorry I'm repeating it.
First, sometimes in a fight I find myself with judgement on CD, the target at like 1-3% health, and I have to wait a full 3.x seconds to kill him. Sometimes I just pop SotC and I can get that swing in a second faster.
Second, I find SotC great for levelling weapon skills.