Deb said it all. You don't even have to loosen the strings to fold it down. And when you set it back up, it's damn near in tune. Of course, any time you take a guitar out of a case, you have to tweak the tuning a little. As for sound, it's extraordinary. It can hold its own in an acoustic session with fiddles, banjos, etc.
I have the I-Beam pickup system in it for stage work, and when it's plugged in, it's great - clear highs and lows.
I use it it for strumming, flat-picking and what little finger-picking I do.
I recommend this guitar unreservedly for anyone who has to fly to gigs. In fact, I'll be bringing it back to Alaska in 2 weeks.