Ralph - I love your GE roaster and it looks to be in beautiful condition! I have the same model as yours, but it was liberally used over the years and isn't nearly as pretty, but it still works flawlessly.
The Westinghouse roasters, the large Nesco's and other brands of that size, do a pretty decent job of baking. I've made many cakes in a Westinghouse roaster (Bundt, 9x13), as well as pies, breads, brownies and cobblers. Perfect for when you don't want to turn the oven on and heat up the kitchen. In the summer, I'll take mine out on the back porch and use it there. When feeding 50+ people, I've used it for making chili, sloppy joes, baked beans, sauerkraut & kielbasa, and lots of other stuff. If you cook and bake regularly and have the room to store it, then it's a good appliance to have on hand.