most works on using a cane i've seen combine swordlike strikes and thrusts with the ball (or handle) acting as a pommel and counterbalance & as something to prevent the cane being pulled out of your control. they also emphasise using the pommel as a striking surface, including holding it nearer the opposite end and swinging it like a mace or knobkerry. of course these strikes could also be used with a sword. holding the blade and thwacking an opponent on the head with the pommel were well know techniques back when they might mean survival. a cane can and should be used with both hands active.
there is a well known cane maker in the states that uses a spiral fluting all the way down the canes as a trade mark. the edges, bumps and lumps increase the damage done by a strike using them.
Linky for reference.