I can see how these would work nicely as a boot knife too, and the matchstick trick was a great idea for faster blade access.....I know I would hate to be on the wrong end of one of these.
Although the one I posted earlier won't win any beauty awards (especially compared to some of the very nice ones posted) it does rank up there for "effectiveness", knowing the folks that had it prior to my Dad getting it.....it's proven itself, likely more than once.
Tactical blades can be nice (for some I guess) but they tend to bore me when you think of, and look at, blades of this type and the history associated with them. Not slamming tacticals, they certainly have their place, but the history is what floats my boat.