We've travelled for years with our vest and like others have said, carry it on- don't check it. Bummer, Em, about it cracking. Did "The Vest" replace it?
The only problem I ever had was with Continental Airlines on a small commuter plane going from Newark to Jacksonville. The flight attendent was very rude and gave me a hard time. She insisted that it go below so what was I to do? The bins were very small and I don't think it would fit anyways. Plus I didn't want to make a stink and get arrested. <img src="i/expressions/face-icon-small-mad.gif" border="0"> But, they did have it waiting for me as I got off the plane-like they do the stroller checks. But I was very nervous...
Anyways, that was just one experience out of about 15+ trips I've taken it on. And I don't fly Continental if I can possibly avoid it.
One more thing- allow extra time for security. They have to take the whole thing apart out of the bag and it takes time. We did almost miss a plane because of that (and other things that had happened that morning) so don't cut yourself short. Better safe than sorry!
Have a great trip! In fact, we'll be flying soon, too- from Seattle to Florida (my mom lives in FL).
Cheers!
Lisa G.