Would love to know what your experience is with them. I had seen them but didn’t want to try them for the reasons below. I don’t think these are actually hollow based on the thickness of the prop compared to a sheet of carbon fiber weave. These may not have much flex but they aren’t rigid since it is still a hinged design. The shape does not differ much from the stock props so I don’t expect much of an improvement.
I’m still looking for a non hinged prop with an improved acoustic profile that would eliminate some of the dead space in the center and hopefully squeeze another couple of minutes out of the
battery.