Eccentricity Valuation

I walked around all day with a screwdriver attached to my shirt collar.  It is a pencil-sized screwdriver with a shirt-pocket clip on it.  Today was clean up day this morning, so when doing the kitchen I clipped it to my shirt collar (because this shirt doesn't have a pocket) so I could take it back upstairs where it lives.

I'm not sure which is worse -- the fact that I walked around all day with it on, or that I'm considered eccentric enough that nobody I encountered (at the office or at a customer site) pointed it out to me.