Two points are nevertheless noticed negatively me:
1. The cutter is to not clean! She makes a slight curve inward so that there is a light gap of about 1 mm x 8 mm near the ricasso.
2. The locking mechanism secures the blade correctly only if this comes with a lot of momentum against the end stop. By gently sliding it does not work and the sheet can be opened and closed as often as desired without unlocking it.
Possibly both points are only my knife so and not "normal". Point 2 can possibly resolve over time by itself when everything is a bit retracted.
How sharp a knife, it is judged subjectively by the user. But I'll still regrinding my knife.