SAK. And possibly only a SD Classic key ring model.
My condolences on having to work amongst anti-knife sheeple. For your own sake, NEVER underestimate the combined and self-perpetuating irrationality, ignorance, hysteria, and vindictiveness of someone seeking a pretext to claim Victimhood (and lawyer up to sue for emotional/psychological damages in all directions, including yourself).
Ask yourself how important or necessary is it, really, to have a knife at work?
I hate pointing all this out, but this is what our once proud nation is being reduced to by eager Professional Victims , their ambulance-chasing lawyers, and frightened HR departments who are hostages to both.