There was quite a bit of experimenting done using this hone trying to settle it in for SR use and lessen the harshness back in 2007 IIRC

I seem to remember people going so far as to use CrOx powder, Coticule dust, and even Diamond paste to make these work and produce a smoother feel on the face.

I would not recommend it for a SR if you asked if you should buy one, but since you already own it then you might as well mess with it and have some fun


Good Luck