So it sounds like there's re two ways to use it. As it arrives as a finisher, or to use a slurry on a slightly degraded edge. I see where Michael says that you can use a slurry and bring it back to a finisher with 1500 grit sandpaper, but would using it for both be unwise? Should it be better to use it as one or the other. Just wondering if it would damage the stone to go back and forth between slurry use and polished finisher usage.