It's a shame that the world has come to this. MacGuyver would have died in Chicago due to police confiscation of his trusty Swiss Army Knife.

Seriously, I do understand your plight. Being a teacher somethimes makes me leary of carrying a knife in the classroom. I've decided to carry a Leatherman Squirt S2 in my pocket because of the short blade length and it still has some tools. My ChargeTi is then locked inside my car where I can get to it quickly.