they are not indestructible. The neck on my bowed and as their is no adjustment I had to have the frets leveled to compensate. My luthier said it was a hair from having to have the fingerboard planed flat which would have been a huge hassle with the material. Also, the material does not grip the frets very well and many frets and came loose and had to be reglued
Peavey bought them recently but i'm not sure if they're making the cargo yet. Also, the cargo is still big enough that if the airplane is crowded, you many not get it onboard. A better bet is the
voyage-air line of guitars IMO.