VRS done intentionally is not the bugbear it is being made out to be....or should not for a competent pilot. Can it be interesting in aircraft response....maybe...but then it is an intentional maneuver and one should be prepared for "unusual" reactions.
It is unintentional entry into VRS and particularly when close to the ground that VRS becomes the bugbear it is known to be.
One man's opinion developed over almost forty years driving these wonderful machines we call helicopters.
BLC says it right.....VRS Demo's are not ground reference maneuvers.....simply air work....unless you are doing something horribly wrong.
In reality....could one not do this all by reference to instruments? During my US Army Instrument training....we did so as a part of unusual attitude exercises but did not call it VRS by name. Instrument indications can be fun to figure out while all this is going on....but just as doing it by eye looking outside the windows....attitude, heading, airspeed, and power are the keys to recovery followed by rate of climb once forward airspeed is regained.
On instruments the key is knowing how you arrived at the situation you find yourself in.....so it is not really a complicated concept or exercise to conduct.