I think it is a matter of taste, just like with cars.
Some people like to have: V6, V8, TDI, or SDI, etc. marked on the back, other people like it slick and clean.
I have a knive that is marked 'D2', very subtile.
I like it, but only because it is subtile and only two characters.
Having to much information on a blade makes it look cheap in my eyes.
(not a statement, just my personal taste)