I prefer to have the blades sterile because:
1.) I don't feel I should be used to passively advertise for a company. If someone is interested, I am fully capable of telling them myself. ( I don't mind small unobtrusive stamps, just the big flashy logos )
2.) some really nice knife designs are messed up by the distracting crap on the side of the blade.
3.) If the name of the company sounds or looks agressive, and you use the knife to defend yourself, The opposing lawyer can have a field day asking the jury to ask themselves if your intentions were innocent, why carry a knife named "Deadly Creep Gutter" or some such thing, just to peel apples for children or open boxes at work?
4.) I think most logos are just plain ugly.
5.) I am not stupid. I know which knives I own, and I doubt I will forget the manufacturer of a good, or a bad knife.
Closer to home, it is why I don't plan on buying a Busse, although I would like to. The reality is people who see the "Combat/ dogtag" logo are less likely to be convinced knives are usefull tools and not weapons in the environments I use knives in.