Front & back of this clever retractable matknife. Having used it, my main complaint isn't the idea of a sliding blade--I like that a lot, seems safe and convenient.
Rather, while I use it, I have to be careful about where I place my fingers. I have a tendency to press the black release button, which makes the blade slide up into the handle. It's a design flaw. Be interesting to see if this is corrected by Ace--or if this is just a novelty--or if other matknife makers will perfect it.