I enjoy using the EP 220 stone for very dull blades with minor damage. I only drop down to the 120 grit for aggressive profiling. The 220 can drop a bevel pretty quickly and is less friable than the 120. I find that although it takes a bit longer to remove
metal, it can wear a bit slower than the 120 and I’m not afraid to pull a burr with the 220. Great stone but somewhat prone to wear because of it’s aggressiveness.