Same principle. Use the full term which avoids confusion and ensures that it is quite clear who is being cited.
Yes! Of course, itís called a ďthird person deixisĒ and some experts have predicted the demise of this particular usage of the pronoun. But, certainly itís still quite acceptable in refined texts.
Personally, I donít find Gricean maxims that productive. To me, the suggestions are rather philosophical than scientific. You can even detect some conflicts in the maxims.
But I firmly hold to a linguistic suggestion with this respect: what a person conveys should be interpreted in a way so that it will be understood.
As I said, in a contract, the referents will be known; as a result there wonít be much trouble.
Do have to agonize over the same problem in Arabic?