Much more important, IMO, to ensure even scratch pattern and that the back is honed all the way up to the cutting edge. Mirror polish is not important.

On a small microbevel, inspect it in the light to ensure it is even and without distortion or scratches. Reason being, you want to ensure that the back and bevel are coming together at one continuous point, not interrupted and without a very tiny wear edge that can be hard to detect but will cause dullness.