I have had one of these for a few years now, takes about 15min to pack a XC bike, 20min for a DH (bolted wheels).
You're just taking off wheels, pedals and bars/stem.
Never had an issue with bent/broken bits unlike times i've used boxes and other bags where i've also had to take more off and use a lot extra padding. UK baggage handlers are not particularly careful
Also the wheels are great, so easy to maneuver and very stable.
the whole bag folds flat too for storage.
The only downside i think is it's quite heavy to start with, so if your bike is more than 17Kg you may not be able to put many other things in the bag as well before you're pushing the 32Kg limit of some airlines.