As one who's studied entry level industrial automation as a part of the mechatronics class I'm in, I have to admit I like that advertising. I'd leave it on. I personally enjoy collecting quality tools with advertising. At least they didn't cheap out like many companies here do, and think giving away a bad tool with no quality and nothing working well paints their company in a good light. Several of my daily carries are knives with advertising, many of those companies I would later discover went bankrupt long ago.
My guess is that it's laser etched into the green anodization--that ain't coming off.