They make some now with 2 pots in one cooker - sounds good to me but I can't justify a new SC when I have a wonderful one already.
I have a Russell Hobbs divided sc. I have only taken advantage of the division once to do the main in the larger part and a dessert in the smaller side. Then again I don't really use it as often as I should. The division does get in the way of putting in a large piece of meat (chicken, leg of lamb etc), so it does restrict in the way. I think it would be good for a dish where it would be good to have some without a certain ingredient. I don't like a lot of onion, but DH does, so I could always put onion in one side of the dish.

Bit unhappy though, after we bought it Russell Hobbs brought out the Reflections range. We bought the toaster and the kettle, then I found they have a slow cooker in that range