When you actually look at the measurements for those bags, they usually turn out to be too small for an 11x14" camera. My camera needs at least 18" square internal dimensions and Jim's needs at least 20x17.5". One APUG member was transporting his Wisner 11x14" kit in a large rolling suitcase like this one--
Which is big enough, but it didn't last very long, and wouldn't be strong enough to protect the camera in checked luggage, if that were a concern.
There are better rolling suitcases of similar dimensions, but they get to be more expensive than the Calumet Watertight case that I'm looking at.