I have injuries and have walked with a cane for years. I don't need it all of the time, so I generally keep a wood cane in the car and one at my desk as work because it is a pain to carry around with me.. I would love to be able to carry one in a bag/backpack. Anjd I know there are crappy aluminum canes out there that fold or extend, but I want something I can strike or grapple with if needed. Does anyone make something like this?