Bell blames *all* the 407 tailboom problems on this. Of course, they have to blame them on something other than inadequate engineering. We keep a crew of sheetmetal repairmen busy repairing the cracks.
I don't like using it. That's what the rotor brake is for, and if you don't have one, then you should just wait for the blades to stop on their own. Of course, in some circumstances they will never stop. I've had the blades start turning on their own after being stopped by the old Bell system that had the rotor brake using the aircraft hydraulics system. After the transmission stopped, or even slowed considerably, there was no more brake, and no way to stop the blades on a small offshore platform. I can say that the t/r pedals won't help in this situation.