Have you flown with a big stroller, like an UBV, Bugaboo or Stokke? Baggage check or gate check? Did the stroller survive the trip? Did you have a bag for it?

We are traveling tomorrow and I really want to take our Bugaboo, but I don't have a bag for it and I'm really terrified that it will be broken. I may take our Maclaren at the last minute...