No, never even considered it as a possibility. Does seem like it would be an annoyance and in the way. I've never had a problem finding something to lock it to even if its across the parking lot or down the street a little. I try to be careful bringing it into my storage area. I've clipped the edge of the doorway a few times with the pedals or leave tire marks on the doors.
If someone tried to bring one into the library I dont think i would be the first person to say hey what are you doing just because i think others would beat me to it. We have a bike rack outside. There has been the occasional llama in the building and if there was a bike show or something that would be different. We even have a bike lock people can borrow while they're here.