I'd also like to know the same thing. I'm a Hong Kong-born Canadian citizen. Based on what I've read, I have ROA in HK although I left as a 4 year old and have no HK documentation other than a birth certificate. I'm currently in Hong Kong for 4 months on academic exchange and am planning on getting my HK Permanent Resident ID card while I'm here, and am hoping that I can also get a HKSAR passport and Home Return Permit but don't want to give up my Canadian citizenship to do so. When I apply for the HKSAR passport and HRP, will my Canadian citizenship bar me from obtaining either document?