I think Tom is the voice of reason on this forum, but let me chime in and just say this -- the caselaw that I am aware had to do with a push dagger, but it ended up with a very broad "modern definition of a dirk" that would include most general purpose fixed blade knives.
I don't think most of us will ever make to the Court of Appeals on this issue, so in the meantime I think we need to be primarily concerned with perception, given that police officers, ADAs and judges have a lot of discretion.
I think the Woodswalker is a nice little knife, and it looks like one.
I also like the Bud Nealy fixed blades that hang upside down inside your suit coat pocket.
Both of them MAY fit within the letter of the law, but which one do you think will get you into trouble? I think a lot of officers would recognize the Nealy for what it is.
No offense to Bud, I love his knives and admire his designs. The sad story is, though, law enforcement is not going to help you find loopholes for items they consider to be weapons. Quite the opposite.
My two cents.
Seth