I'd like to respectfully disagree. If it's at/near a convention, for example, then it makes sense for them to be wearing it, and sometimes kids will get excited seeing it. If the kid is ok with it, the parent is ok with it, and the individual in question is ok with it, then I see no problem. But if they walk up to a random child without any prior communication, or they're in a location that has a lot of weird shit going on, then please, for the safety of everyone, get that double-barrel.