I get in contact with them and here are the advantages compare to VR Headset
“The ESTHEL system is world exclusive because it is cleverly combining simulation technologies and real equipment:
1) Unlike VR headsets, it enables to perform REAL HOISTING exercises on the left side of the system (real Goodrich hoist, footboard 3 m-high), which for instance perfectly deals with the issue of putting a stretcher in/out of the aircraft.
2) On the right side, the use of simulation technologies is mixed withreal equipment in order to reach the necessary reality feeling:
trainees get attached with their own harnesses, they use their own helmets with audio inside, hoist grips are similar to the one they use in real life and are placed at their exact position, ...).
Moreover, there are tools to increase immersion and remind the hoist operator that he’s not comfortable while performing his task: vibrating cabin floor, wind blowing system at the door, various noises (helicopter, alarms).
3) Unlike VR headsets, the system is meant for CREW MANAGEMENT (see the picture enclosed):
1 pilot, 1 hoist operator and 1 eventual door gunner can physically operate in the cabin at the same time.
They use their own intercom helmets, the ministick is operational for the hoist operator in the hovering phase, ...”