They are on my wife's bike. Whenver I've borrowed it they felt extremely fast, my only concern is if they are fragile, if she gets a puncture in the rear tyre (they are set up tubeless) she will have to get an Uber .. Alfine etc.
Mine are tubeless. Never had a puncture, yet. (I bet it's flat when I go to ride home later)
I've had quite some issues with slow flats, but I think that was down to the valves.
They are on my wife's bike. Whenver I've borrowed it they felt extremely fast, my only concern is if they are fragile, if she gets a puncture in the rear tyre (they are set up tubeless) she will have to get an Uber .. Alfine etc.