That is very cool. I visited http://www.blackswiftsticks.com/index.html
and may have to add one to my collection. Here are some of the sticks I've accumulated so far.
Left to right, a cattlemen's steam bent hickory cane with a crutch tip added to it. I have white oak one without the tip in my Jeep.
An Odie Crisman putter is next which golfers of a certain age may recognize. This one was awarded to my grandfather by his college students when he retired. When his vision became so poor he could no longer enjoy playing golf, he converted it to a walking stick.
A Blackthorn from Cold Steel I bought for my mother. This one is real Blackthorn and not the polypropylene facsimiles they sell today. Blackthorn grows on the British Isles and the sticks were popular there and being the anglophile she was, it was her favorite.
The serpentine cane is one I made myself for my mother. We have a type of Indian basket grass or yuca here that the locals call Bear Grass. It sprouts tall straight stalks with huge clusters of blossoms. I have made strong, lightweight, four-foot long hiking sticks from them in the past when I noticed this one growing crooked on a road I drove daily and kept my eye on it. It's geotropism had run amuck. When it was mature, I cut it and let it dry in the garage. She carried it long enough to show and tell to her friends before reverting to the Blackthorn. It's short but so was she, specially with her osteoporosis. In spite of the crookedness and lightness, it supports weight well.
A hiking stick a granddaughter returning from Germany gave to my mother. The leather wrist strap has been lost to time but notice the point. I bought a long one, not pictured, to display my collection of badges on when I was stationed there. It has a curved handle and I cut the steel tip off and replaced it with a crutch tip to make it practical here in the Big PX.
The last three were used as pointers by my grandfather when he was teaching. Prior to that, the shorter two might have been swagger sticks from when he was an officer in the CCC or in WWII.
Not pictured are hiking sticks I've made from Crape Myrtle, Yaupon or White Elm used for trudging around the property or to sort cattle. Walking the neighborhood, they are also handy for warding off aggressive canids. When I have my stick, they fall in behind me and follow me quietly for a while, as if I was the leader of the pack.
For an older gentleman like myself who can get away with carrying a cane, I do believe a cane makes a worthy self defense item.