Hmmmm !
An interesting research programme, but ...............
My own experience 14 + years S&R and test flying with a variety of hoists and underslung loads, points unerringly to the hoist, with the add-on 'long-rope' where needed. By their very nature, these operations are unpredictable and ad-hoc variation for each crew member has to be allowed for.
My reluctance in respect of HEC stems from unfortunate (but non-fatal) experience with Whirlwind and Seaking - the common factor being the attachment hook. The hook mechanics, theoretically, prevent uncommanded release - experience refutes this, as it does for trials flight HEC (with dummies ! ! ! )
The hoist referred to in the programme is not one I have come across, but there is sufficient variation in manufacture available to suit most users.
As to the deployment of medic/winch Op/ winchman discussion, while we operated 'in role' normally, provision was made for winch Op/winchman reversal if the situation merited the relative experience.
PS - The fact that this is Norway oriented makes an obvious 'local' influence (terrain and Wx) but, even so ...