While the first pic was loading, was thinking I'd say something to the effect that, IMO, the flipper is one of the most ingenious parts of a knife I know about, and it proves Kit's genius -- whether he thought of it or not.
When my CRKT M16 was finally properly lubed, it became extremely easy to open with the flipper. It can be done in a split second, once you've mastered the draw.
Another important part of the design is the thumb studs. Even if you don't use them for opening the knife, they make contact with the end of the handle, which thereby serves as a stop pin -- a stop pin that ain't ever going to break, or need adjustment. What's amazing to me is that after thousands of cycles, you can only detect very faint marks where the studs hit the handle. CRKT did a fantastic job on the hard anodizing of the aluminum.
Have to say that the toggle lock folder is one of the coolest looking knives I've ever seen! That handle is gorgeous, and the design is too cool!