✔ 最佳答案
There is no actual, official answer.
But I suggest against (not to use Home Return Permit) as entering will not be an issue. Exiting may be an issue.
Home Return Permit is a document for Hong Kong and Macau based Chinese citizens only. China does not recognize, and in most of the case (except Hong Kong and Macau), does not allow multiple nationalities. Since only your U.S. Passport can get you on a U.S. bound flight, how do you address the dual nationalities issue to Mainland authority?
This situation is basically similar to renewing your HKSAR Passport in the Chinese Consulate in the U.S. - they will not do it as you have dual nationalities.