Does anyone have any experience of friends or family getting one of these? http://www.immd.gov.hk/ehtml/hktraveldoc_3.htm

I ask because my (Filipina) girlfriend is thinking of applying for one to avoid having to stand in the visitor queue at the airport every time she comes here. Does anyone know if "frequent visits to my boyfriend in HK" is accepted by Immigration as a valid reason to have a card?