It works 100%.
It releases ALL pressure from the transfer case, if there was any load on the clutch plates then the front wheels would engage. I have even tested on the hoist, there is not even a hint of movement from the front wheels. If there was any pressure on the clutch plates then one would assume the front wheels would start turning, even a little bit, but that isn't the case.
I'm getting sick of posting up THAT IT WORKS. We have even had an RS4V on the dyno using this method and the transfer case isn't broken.
I beat up on my wagon at Powercruise all weekend in 2WD and my transfer case isn't broken, 4WD still works 100%, when I want it to.
Please stop scaremongering and propagating rumours. If you don't believe me that it works, DO YOUR OWN EXPERIMENTS. If you're too scared to, then don't bother, forget even thinking about it and enjoy your 4wd for what it is.