Cast iron pan

I have a meat skillet and a dairy one. Because of the way cast iron is cared for (often not soaped) can I for example cook potatoes in the dairy skillet and serve them with meat?

If the skillet wasn’t used for dairy within the past 24 hours you can cook potatoes and serve them with meat.
If it was used for dairy within 24 hours the custom for Ashkenazim is not to eat the potatoes together with meat, while the Sephardic custom is to permit.