Indeedly, and also good for triple figure rifts.
Just need a dead man's legacy, dawn and one more piece of set gear.
Oh and a hellfire ammy...
Leveling with a gem of ease is lolz for the first few minutes Even if you slot it into a sword, so hardly any DH skills are available :/
Depending on what you're running, I'd say a Tal EB build is probably a notch quicker, but with less screen clearing power. The fact that you can teleport makes you definitely quicker on maps that have mazes of hallways. DH for large open maps. Looting is what slows you down.
The problem with the DH is that it gets quite boring quite quick. It's the same build basically for all situations. Playing a different class for once has been a breath of fresh air.