I think wumpus is correct, it does need defining. Obviously, if the children were family members and being accompanied by such, then it would not apply, I assume. I think it needs to be clear that if the child has a legitimate excuse for being out, then that's okay, otherwise I'm in favour of it. That's not exactly true, I'm not in favour of it but I can see it as an interim measure until such time as a plan is discovered to reverse the current trend to ASB and violence.
As for you, as a lone worker, your employer should have a risk assessment in place for you and provide the necessary safeguards to ensure your safety in the workplace; whether that means you pairing-up or not, I don't know.