The laws regarding knives here can be a bit vague at times and I'm wondering if knives like this
Or this
Would be considered illegal? The top one is assisted and deploys in a way that seems like a switchblade and the bottom one can be opened with one hand thanks to the knob. I am not sure if they would be viewed any differently than a pocket knife because they use utility blades making it a bit more obvious that they are a tool.
What they don't want is for you to not have to touch the blade to open the knife. So if there is a stud or protrusion that you apply leverage to on the blade, seems good.
What is nonsense about this law is the centrifugal deployment. If your pin that the blade rotates on is not tight and you can flick the blade out, illegal. What would be tight enough? You would have to make it hard to open with two hands because that officer deciding if you are legal can flick that knife as hard as they want. So you may not have the grip strength and/or skill to flick the knife out, but that officer can.
They want you to carry a Swiss Army knife or folding buck knife. Actually they don't want you to ever carry a knife, unless you need one for work, which make sense because anyone working is magically unable to harm someone with a razor blade, linoleum knife, or duct knife.