Ease of Installation: Fairly nice. You should probably drill some holes for the mounting screws, but I guess you don't even need to do that. Other than that, the most you'd need to do is either move one of the existing trem springs out of the way or remove it entirely. Also, keep in mind that, unlike the Tremsetter or the WD, you don't have to be holding some spring or wrestling with any other thing while you install it. You set it where you want it to go in the cavity, and just drive some screws.
Ease of Adjustment: Just like the BackStop, there are just a couple of knurled nuts that you turn with your fingers.
Effectiveness: Like the BackStop, once you get it adjusted, it does work as advertized.