Has anyone here used the Z1 Flip Lock? I read all sorts of things about it, it works, it doesn't, its a pain, its a safety feature, it does this...I saw a Youtube vid showing how it works and it just doesn't look that complicated to me. Press a button, push the lever, and the plate slides. Release a catch on the lever to push it all the way around and it releases the whole plate. Pretty straight forward. Can anyone who owns one or has used one give me their thoughts about how it works?