I haven't owned one of those specifically, but I have owned a Seagull M4 (formerly known as Merlin), which is a very similar instrument. I've also owned a dulcimer, which was also played the same way except in a different position. They are a blast to play. Anyone who can fret a note can pick one up and start making music right away. You can do a lot just by pressing down the melody string only, but you can get more complex things going too.
These instruments are limited in range but unlimited in fun! They can be hard to put down once you pick them up.
FYI: The guy who makes the ones mentioned here is also the guy who came up with the Martin Backpacker travel guitar. That's a neat story too. I'm not sure of an exact link on where to read it.... That said it goes a little something like this:
He was making a travel guitar out of scrap wood he was buying from Martin. Martin found out and called a meeting. Some laughed at the instrument until they found out what he was making it of. They decided they could profit and entered a licensing agreement with him..The rest is history...The guitars are produced in Mexico... Some hate them, some love them. I actually like them. It's sort of a banjo meets guitar sound to my ears.