I usually carry only smaller knives at the office. Or, like today, I'm carrying a para 2, but also brought a dragonfly in case someone asks me for a knife, as to not freak them out.
I would feel more comfortable pulling out the dragonfly. That would probably only result in a "Whoa! You're carrying a knife. Who are you going to kill? ... let me borrow it.", while the para 2 probably would cause a "Holy fruitloops! What is that thing?!".
But it doesn't really matter much, since people here are very afraid of knives for some reason and think that you're "armed" if you carry a ladybug. The only socially acceptable knife to carry is a SAK -- barely. You could get into trouble, though, if you carry a too big knife that might not be considered a "normal pocket knife", but that's a legal issue.