The thing that's puzzling me is how does pressure tip technology remove the H/V curve? Whatever the means of driving them, the blades must slow when the drive is taken away. There has to be a certain time taken to enter autorotation. Do the tubes running down the blades mean they've got so much inertia that the pilot would have to have the reaction times of a zombie to fatally lose RPM?
There's a list of reasons given as "Why pressure tip technology". How are some of the advantages stated due to pressure tip technology? For example, why would that make it more stable/easier to control? Or give it more payload? or more speed? (Would this be because of the missing gearboxes and running gear for the TR?) Presumably the no icing claim is because it's less susceptible to icing due to the gasses running down the blades. And as for less noise I thought tip jets howled like Banshees.