I have the same exact setup for duty. Is it normal for my switchback 2.0 to be loose? Mine spins around the body/tail cap of the fury easily. Seems like all the videos I see it is firm and un-moveable.
If you watch at 0:54 Secs you will notice that he rotates the switch slightly before setting it down. I had heard the Thyrm lock on place as well. In my case it locks down but there is still enough to be able to swivel the Switch. It does seem to stay where I put it however.