Bob wrote about how to finish his blades, and encouraged people to attempt it.
Purely traditional polishing is a waste of time because there will never be any hada exposed, Bob stock removed the steel and then clayed the edge...that said, if one wanted clean crisp lines and good finished qualities, seeking out a credible polisher schooled in hybrid characteristics would be optimal.
Two of the practicitioners at my dojo have finished, mounted Engnath blades, and they cut very well.
Best Regards,
STeven Garsson