It's a little early to tell, because the law has only been enacted since 2014. I did follow-up interviews in Victoria in 2016 and 2017. I gather from the people I interviewed there, especially indigenous people, that these laws have not helped them feel safer. They have to be more hidden when they're involved in sex work because they don't want their clients to be discovered and so on.
Whether it has impacted human trafficking, I don't know, because we don't really have those data in front of us. I think it has made it more difficult for people who legitimately want to be involved in sex work to do so, and I don't think it has increased confidence in the police.