The factory edges on CRK knives really are hit or miss. I sent my Sebebza 25 for a spa treatment and the knife came back a butter knife. Literally could, with force, run my finger across the blade. No slicing ability whatsoever. But, on the flipside,8 got a 21 back from the spa and it was a moderately sharp edge. The good thing about CRK knives are that they are super easy to touch up!
I'll say they're easy to touch up when the secondary bevel is <40* inclusive. For example, my large 21, I'd rather just touch it up on the Sharpmaker, but it's way more obtuse than 40*, thus the need for something with a little more horsepower than the Sharpmaker.