When I work, I carry what I want because there is no checkpoint. However, I only ever bring out my little Victorinox Classic mini-SAK for chores like helping set up my work equipment. I only bring it out because it's all I need; or if I forget the Classic, I always have my Micra as a spare.
I see no need to pull out my bigger knife to make a statement. In fact, doing so is counterproductive to us knife lovers, like it or not. It does no good for someone to be "in-your-face" to show they don't care what anyone thinks about their big knife.
Jim