While I am not an attorney - thus do not take this as legal advice, if I were taken into custody I would invoke my right to council. Invoking my right to remain silent is almost useless in my readings - the right to council is key.

Also - re attorneys asking "loaded questions", I believe they can only ask what everyone is referring to as "loaded" against a hostile witness. So that would be a witness for the otherside on cross or your own witness who refuses to cooperate. If you see an attorney asking their own non-hostile witness leading questions in real life I think someone may be missing an opportunity to object.

R