Carbide turning tools look like a great option for someone with only a diamond sharpening stone to keep his chisels tuned up.
I ordered some stainless steel and the carbide inserts online and was able to whip up a basic tool pretty quickly.
time will tell if its ergonomically optimal, but i enjoyed combining metalwork and leather work to create a nice little tool similar to old wooden golf clubs.
in hindsight i may use square stock vs hexagonal, as carbide is only used at 90 degrees to the turned surface and catches agressively when things go wrong.
Ill probably also bulk up the handle with a more traditional turned wooden approach, to help resist the tool rotating when in use.