Oh, I wasn't implying that it was a copy of the axis lock (and even if it were, I wouldn't care).
Nothing I've said here is anything like a criticism of Spyderco--I know that's how it sounds, but really, it's not. These things are hard to get across in type.
Having owned several BB locks and axis locks, I mean, they seem to be effectively the same thing. I get the differences, but they're not functional differences, as best I can tell. But, on some fundamental level, I suppose, all locks work the same way. They put a wedge inbetween the tang and something else.
The compression lock is a much more significant difference, but I think it would be very difficult to debate that it wasn't derived from the liner lock. I suppose the relevant question is "would it exist without the liner lock?" and so the same is true for the bb lock.
I don't want to give the mistaken impression I care about IP or that what I'm discussing is relating to IP infringement. Merely noting that at this point, the BB lock looks (and while how things look is subjectively debateable, I think it'd be difficult to find an opponent on this) a lot like an axis lock. Comparisons are inevitable.
As per the axis lock requiring liners, I don't see any reason why it couldn't just go against G10, SS or a titanium handle and skip the liner. It does seem that, as a rule, knives with the axis lock have liners though. But that doesn't really say much, Benchmade has always been big on liners.
See? All is well.