While many sources point to the Sgian Dubh as a "weapon of last resort", research I did a while back also pointed to the fact that in poorer areas of England (such as the highlands of Scotland) a host probably would not have enough cutlery to set before all guests for a meal. So it was common courtesy to bring one's own cutlery, hence the knife and fork on the "dress dirks" and the Sgian Dubh is also, from its shape a skinning knife, and quite probably also served as an eating utensil too. This being several centuries later, it is best, perhaps to to follow the advice above. I also remember seeing (can't give you a link) of plastic ones for the kids. worth a try?