Hi
From the video although hard to judge the forward speed is very low. He may be moving around quite a bit with a very nose low pitch attitude but due to low forward speed will not put the aircraft into a low g situation. Remember the low-g caused by forward cyclic is exasperated with increasing forward speed.
Also due to the hard maneuvering it would be difficult to build up any significant airspeed. Probably not much above translation lift speed 15-20 kts.
Regards