In the Chinook....clever use of the yaw pedals during takeoff can produce additional lift as you accelerate the aft rotor into clean air not disturbed by the forward rotor.
I wonder how that would work in dealing with a VRS situation.
In all of the VRS demo's I ever performed during conversion training for. new pilots....I do not recall it being all that easy to get into a full blown VRS descent.
I know it was not one of the demo's that caused much excitement as I recall it being a rather benign maneuver.....but always done at 3,000 feet AGL.
In the early A model...turning off the SAS in a steepish turn was not for the faint of heart....feeling the aircraft trying to swap ends at 100 Knots was far more exciting.