As my profile says, I live in PRIL so I obviously can't have a carry permit. I am a paramedic in a kind of rough town with a lot of drugs, low income, and all the social problems that go with that. I now have a little bit of protection.
KA-BAR Knives: KABAR TDI Law Enforcement Knife, Serrated, KA-1481
I love it. Small enough to not draw a lot of attention on my belt, but carried all the time and ready to go if shtf. Love the pistol grip style. A lot of gross motor skills that will still be around in a stressful situation. Hope to never use it but if I have to I am glad I have it.