Now that's a knife Alimac.
These are my 2 favourites
One's Aogami Steel and the other is Blue Steel.
I've been through every kind of sharpener and have to say that none beat the good old fashioned wet stone. 1000 grit, 3,000 grit, and an 8,000 grit.
The 8000 is overkill and not really required....... but it's fun slicing with a polished blade.