I modified my Calton by adding 2 more 'D' rings, so I can use padded clip-on shoulder straps for carrying it on my back, leaving my hands free.
I always check it. It has always arrived, with a few nicks and scratches - what I would call normal wear and tear.
The airlines did manage to knock off the little round metal bumper/feet, but the case still works perfectly. It's one heavy mama, though, and I'm glad of the shoulder straps.
I bought a Fort this very afternoon for my new guitar, but as DADGBE up above said, the straps (no latches) are a pain and the case doesn't seem to close perfectly.
I checked out the Hiscox site above, and I'll give one of them a try for my new guitar.
I'll also probably modify the Hiscox (if I like it) by adding 'D' rings for backpackery.
Seamus