The thing that's puzzling me is how does pressure tip technology remove the H/V curve?
Without knowing the full story, I'd say it's got enough inertia such that for a loss of thrust, and allowing for the 'standard' reaction times to check down on (or fully lower the collective, given enough height), you'd be able to cushion on in a hovering auto from any height AGL.
eg. low hover - simply freeze collective, wait and cushion at the appropriate time;
medium height - check down on the collective a bit to preserve Nr, then again, wait and cushion on;
high-ish - fully lower collective, fall out of the sky, initial pitch pull when your backside chews a hole in the seat cushion, then use remaining collective to cushion on.