Dr. Trout Bum,
Yes they do separate for broiler use and I do use them to make stacked enchiladas. I only have two that were given to me by a friend years ago. He told me that he had gotten them from a steakhouse, that's all I know. They are really good for Enchiladas but I wish they were square. Good luck finding some.
"It's all done with smoke and mirrors..............I think I like smoke the best"
Highly modified Bandera w/ griddle on firebox