Yes, scrambled eggs works wonderfully in a cast iron skillet but it needs to be well worn in. On a new pan you'll end up with an awful mess. But feel free to go to town on that with washing up liquid, steel wool and a sandblaster if you want. There isn't some magical pixie dust on it you need to worry about rubbing off. Just dry it properly after and oil it before you put it away. Keep frying in it regularly and it'll be fine. A brief hiccup in your skillet's breaking-in process.
Edit: In fact we had scrambled eggs as part of dinner this evening (with rice, chilli crisp, garlic mushrooms and bak choi) and the pan is currently in the sink full of water, where it will remain until tomorrow morning because it's Friday night, dammit, and it will be fine.
Edit: In fact we had scrambled eggs as part of dinner this evening (with rice, chilli crisp, garlic mushrooms and bak choi) and the pan is currently in the sink full of water, where it will remain until tomorrow morning because it's Friday night, dammit, and it will be fine.