The early self cleaning ovens cleaned better than the new ones. GE had a mullion element around the front of the oven that not only kept the front of the liner hot, it also helped clean the door. Now without the front element and those big windows that cause so much heat loss, the front areas of the ovens do not clean so well. With my Americana, the upper oven panels are removable and can be stacked in the lower oven and cleaned when it is self cleaning. The same could be done with the panels from the narrow companion oven in the 40 inch ranges.
Sandy, you can run that continuous clean oven at 500 or as high as the thermostat allows when you can have the windows open and burn that grease out of the porcelain. Actually, if you rinse it very thoroughly after cleaning, you can even use oven cleaner on that liner. You have to use terry cloth so that you have texture for getting into the pores of the stuff and you have to use vinegar in the rinse water to completely neutralize the alkalinity from the cleaner, but you can have alternatives to not roasting a turkey. We used to tent the bird with foil when we roasted it in the oven and that cut way down on spatters. Then we started using the WH roaster oven and just put the whole inset pan in the lower rack of the KitchenAid. Of course, we made gravy in the inset pan and that cooked all of the good stuff off the pan and into the gravy. Once we got the gravy made and it was simmering, we lowered the Load and Lift Rack that held the turkey during roasting into the gravy and let the drippings that were stuck to it cook into the gravy.
Tonight we were in a restaurant and heard the people next to us mention gravy. The women said that they did not know how to make it from scratch, but one said that you used the grease from cooking meat so it was mostly grease and salt. If something ever happens and these people who don't know much or any of the domestic arts find themselves on their own, they will be desperate for help. If they don't know how to make gravy, they probably don't know how to make biscuits that don't come out of a tube or make a cake from scratch.