That's a shame. If someone practices a blade art, they should at least practice things at the level of intensity that the Dog Bros take things, if not to the level of live blades.
I have met Uncle (Bill deThours) and trained with him and he is an impressive guy. It is great to see a guy his age bust out a monkey form. But I've met a bunch of Silat players who are bad ass with a knife...but who have never been in a real fight or in a real sparring situation in thier lives. Instructors even.
As a general rule, I would agree with you. However, considering the 21' rule has been extended, I would say that it would be folly to bring a gun to a knife fight, especially one that starts at standard range for assaults, being 10' or less. (Don't really wanna argue about the details, I'm just saying...)
I'm not sure what my point is? Generally speaking there is no better martial art to learn if you are intersted in learning how to use a knife. However...know that unless you happen to find yourself in a 3rd world country defending yourself with a knife isn't going to be looked too kindly on by the law. Furthermore, in many parts of the US, the knife isn't going to be very much help against the good old gun...which has really been the most popular weapon used by criminals since about the 1800's.