I'm surprised you don't get chastised for carrying anything other than a SAK at work lol.
As for added value, it's like Paul said, it depends more on the buyer than anything. I have this Disney children's storybook that was bound upside down. I've kept it for years wrapped in plastic because i read years ago that Disney is a real stickler on not letting mistakes like that slip through the crack. Then i read that as far as collectable books go, things like this actually take away value and buyers aren't interested, unless you have someone who specifically has a thing for these kinds of screw ups. In other words, if this were a really rare knife, it might be worth more without the mistake than with it, depending on the buyer it could be considered a flaw to an otherwise perfect knife. The same thing goes for Hot Wheels cars. I have some that are missing wheels, others that are upside down in the packet, some that have paint screw ups, and some that are carded on the wrong cards. They aren't really worth anything except to people who are into collecting the screw ups.
SHARPEN IT LIKE YOU LOVE IT, USE IT LIKE YOU HATE IT