Having used and carried a cane quite a lot in the past, I am a firm believer that everyone should practice with a cane, and even try it out in sparring.
I like the extra reach advantage for leg attacks, but also for shots to the head and hands.
I am ambivalent about using the hook to grab someone around the neck (usually the hook is too narrow) or the knee, as these seem to be risky maneuvers in an actual fight, although you may find you like these. Canes with wide hooks are available, but I do like the look of them.
I also advise wood over metal as the hollow metal canes available in drugstores like Long's are actually weaker than the wooden ones. I have broken them in practice.
If you want a good cane, look for a good solid wood, like oak, or even rattan. You will find that they are sturdier than the wooden ones available in Long's.
Besides the hook type, there is also the hammer shape (I hope you understand the description), which can give some good strikes, and the "ball-shaped" heads, which can also be very effective.
And, of course, as most umbrellas also fall into these shapes, the skills are transferable.
A cane is one of the few legal weapons that can be carried anywhere, such as on airplanes or to Court in my case.
And, I always get a good seat on TheBus.
