A little over 20 hours in the Air version with circuits at 1000’, a number of autos and everything in between. My role was testing as it was the first of type in NZ. I survived but it was an interesting experience and much of what has been said is so true. Flying without reference, as you were simply sitting on a small chair and all you could see out front was your feet and a few simple gauges was initially very wired.
As it was open the engine provided the necessary heat to keep warm but the general High rpm was A bit concerning. I did the required 20 hours of testing and then handed it back to the owner and promised my wife that I would not take on such tasks again. My recommendation to anyone thinking of an experimental helicopter would be find another hobby or buy a certified one like a 22, H300 or G2.