Cooking in the fireplace is the closest thing to grilling over charcoal or wood out-doors. The principle is pretty simple. You just build a good pile of embers and rake them under a Tuscan grill.
A lot of the people who barbecue are guys and guys like toys, so I say anything that helps people grill is okay.
You can grill on anything, ... When I was traveling around the world researching 'The Barbecue! Bible,' I saw people grilling in hubcaps, and the barbecue was great.