Thanks for answering! It's certainly possible to say "She is a Hawaiian man" in English though, for example:
- I saw you with another woman last night. Who was she?
- "She" is actually a Hawaiian man, and he's been a family friend for as long as I can remember.
I presume you could have more or less the same conversation in Hawaiian, except that 'he' and 'she' would both become "ʻo ia".