Fun idea, easy to use.  Perfect size for a 2-5 egg personal omelet.  Use the outside compartment first, so that the handle is on the bottom when you're done.  Lift the omelet a little with a spatula so the runny part can go the bottom and cook - just like you would in a normal pan - when set up, close the lid and flip.   Easier than a normal pan and you don't have to worry that the inside isn't cooked.  Non-stick works great.