It doesn't actually do what it says it does. I've bought one out of curiosity. It'll cut...but takes hours.
No kidding there. I tried out my father's MXZ and it was like trying to cut something with sand paper. It's meant to be a handpowered answer to rotary cutting tools and reciprocating saws, but they turn at a bazillions rpm or move back and forth as quickly, and you just can't move your arm that fast. LOL
Some tools work great for some jobs, but none of them work great on all jobs.