From Diablo Wiki
This is my first edit on this wiki and I updated Spirit Walk for the witch doctor. The old description seemed misleading to me since it indicated the WD did not take damage nor retained the ability to attack while in the Spiritual Realm. The former isn't quite accurate-but kind of is. The latter is definitely wrong. However, in the course of editing it I'm wondering if I made it too convoluted or too detailed for the purpose of the Escape Skills page.
My question is: should Spirit Walk also be counted as a movement speed skill? It certainly increases run speed, but I can't find any official documentation on how much. 50% has been offered on various forums.