I purchased a Martin Classical Backpacker from Muscian's Friend for travel and camping. I haven't decided whether to keep it or not. I'll probably write my thoughts down after I've evaluated it over the next couple of weeks.
My first impressions are that it's definitely an instrument which sacrifices tone for portability. With that portability comes the need to adjust to its shape and small size.
One thing's for certain, flamenco 4-finger and 3-finger rasgueos do not sound that great on the Backpacker. Delicate fingerstyle or classical play seem to be what it's best suited for.
Set-up seems to be okay out of the box. The 12th and 14th frets are just a tiny bit high on the treble side. Action at the nut is near perfect. Action at the 12th fret is 0.14" for the 6th string and 0.12" for the 1st string which is probably a little high although the very light tension of the strings makes it very playable. Neck relief is minimal with about one index card of space at the 7th fret.











