Spectre,
Canes lacking edge might only be a matter of degree.
While my CaneMasters.Com cane does not have a razor sharp edge, it does have a sharp striking edge that will break skin and bone if properly applied.
It also has a very sharp point on the horn that, if applied with sufficient force, would easily penetrate soft tissue such as throats or bellies.
While is does yeoman work supporting my rapidly worsening knees, it is designed primarily as a weapon and secondarily as a support.
Check
http://www.canemasters.com out and give Master Mark Shuey a call to discuss canes.
Feel free to mention me as a happy customer.
Doc Hudson