Actually I’ve recently entered a bug for the speed and strength not having an effect when using positive values. When using negative values this will work fine, but obviously everything is opposite the direction that the arrow indicates for the direction. I reported this with UE-17471. It’s marked right now to be fixed for 4.9, but this could get pushed to a later version depending on other priorities.
To the original issue that Crayox had, I’ve not had any issue getting cloth to work in the scene with a WDS actor facing in any direction.