Just got my first axis lock a few days ago, a Ritter Mini-Grip. Based on all of the love that the axis lock seems to get, I was expecting otherworld functioning, but I've got to say, I'm a little let down. It's true that your thumb doesn't have to cross the blade path ala liner or frame lock, but I've never had a problem with either one of those in 10+ years of ownership (an early CRKT linerlock amongst others, 0350, 0550, etc.). The spring on the axis makes sort of a crunching sound when activated, whether opening or closing, and the blade doesn't seem to sweep as freely as i might like. That being said, I fully expect the movement to "wear-in" so to speak and I'm sure that soon I will not even notice the crunching sound of the axis lock spring.
I guess what I am trying to say is that I am so used to liner locks or frame locks that I was expecting the axis to be the holy grail, and after getting one, I feel that it is just another lock. That is only my opinion, and I mean no disrespect to the OP's assesment of the lock. For what it's worth, I love the Ritter Mini-Grip, but it absolutely needs a new pair of scales!