My knife goes from the boot of the car to hanging off the back of my chair these days, easy access for when I slice up vegetables for the evening stew or curry

I carry a light neck knife on thin leather, it would break before it strangled me- and as has been said, the knife is at hand....
maybe you should have the bino's and sharp dangerous ice spikes in a belt pouch then??
It's not strangulation that you need to worry about, it is pressure on the baroreceptors that will cause you more problems. You can be unconscious in as little as 10 seconds and die as pressure is not alleviated.