Doesn't work. I've seen 10 of them and they all had warped necks. Faulty design to cut into a neck, through the fretboard, through the heel, at the point of the most tension and expect it to work.

The heel has travel in that when it is "locked" it moves. A contiguous neck is what we need to deal with the stress of the strings. Look at the Swiss full sized travel guitar called the Brunner Outdoor guitar. The neck comes off contiguously. It works, since 1995. The Voyage air is a stupid idea.