The stone was more like 3-4k level and pretty slow. I think it had two characteristics that made it unusable, way too slow and medium grit.
In a bevel setter I would want to have fast stone that also does not leave too deep scratch pattern. On intermediate stone one would want to have medium speed to slow stone to be sure all bevel setting scratches are removed but the edge is not damaged by speed of honing. This stone lacked either of the qualities.
I am grateful to Bushdoctor for taking the time to find and cut the stone and also send it out for evaluataion. I hope he finds more suitable stone soon.