Yup, I'm on a spousal visa but am still expected to pay international rates until I've had three years of residency. HOWEVER, often universities don't have set rates for part-time international students simply because most international students need a student visa and thus aren't allowed to be part-time anyway. So I've been paying home student fees by going part-time. Unfortunately that means more time to finish degrees, more time without work, etc. so sometimes it's really not a terribly helpful loophole.