Today I saw a Le Creuset Grill Cover for the first time. I've never even heard of this item before. It fits on the top of the 7qt oval Dutch oven. I couldn't find it on the LC site. http://cgi.ebay.com/New-Le-creuset-...cmdZViewItemQQptZCookware?hash=item3efd88919d Does anyone know what this item is and how it works?