Question for Bugaboo Frog owners.

We're taking the family on a trip back east soon (to visit friends and show off the baby), and I'm wondering about my Bugaboo (notice how it's mine and not the baby's). Has anyone checked it at the gate before, or do you check it with the rest of the baggage? The first time we flew with it we were only using the car seat attachment so we checked the wheels and frame at the gate and brought the car seat on the plane with us. But now we use the full stroller (seat and frame) and I'm worried that the bag check person at the gate will get the seat and frame mixed up or separated somehow. Maybe it's just better to buy that Bugaboo "Transport Bag" (expensive as it may be) and check it with the rest of the bags.

Any insight any of you might have would be very much appreciated.