I wonder if the 31 inch F'Lite suitcase was meant. That's the one I presently use with my Bike Friday. It's technically oversize, 64 linear inches rather than the max of 62, but that's so close it will probably go unnoticed. Used to use the 29 inch Samsonite Oyster, which is definitely airline legal, but it was a tight fit and I was more worried about damage because of that.

I suspect that the 31 inch F'Lite would work with a disassembled Swift, but don't know for sure. Anybody squeezed it into anything smaller?