Now I don't know how WSL Wing Chun does a Kwan Do. But the way I learned it, it was pretty much the equivalent of Kwan Sau.
Because you have a different interpretation of kwan-sau as well. You're likely using it as a double block and then doing the same thing with knives. Yeah?
They are entirely different in WSLVT.
Kwan-sau displaces.
Kwon-do wards off.
Kwan-sau enters.
Kwan-do evades.
Kwan-sau attacks the person.
Kwan-do attacks the wrists.
I never disagreed with the idea that changes in technique and strategy have to be made when using the knives. What I disagreed with was your idea that the knives and empty hands are completely different while the pole and empty hands are the same thing. Saying such opposite things about the 2 main weapons of Wing Chun just doesn't make sense.
Why doesn't it make sense? A long pole and double knives are very different weapons.
Long pole strategy is analogous to our core empty-hand strategy.
Knives are analogous to Biu-ji strategy, which for us is a sharp departure from the core and they generally cannot mix.
It may be (is) the case that in other YM lineages, people made up their own BJD form and not knowing anything about knife strategy or even Biu-ji made it simply as a continuation of empty-hand, which is pretty suicidal, but they never had to put it to the test or even do knife sparring, so what do they know?