Tell that to the 17.9 million Australians who don;t know that. (Oh, and by the way, the official SAPOL badge is enough proof of Identification, thus why U/C and detectives sometimes where them on there belts, over pockets, etc etc. If asked for further ID, they can flip it over and produce the Picture and the rest of there ID card.)
Im just giving my opinion on this topic. I dont think CFS will ever endorse it, nor do i think they will give it support. They offer an ID card at the moment, which I believe is good enough.
If you want to go buy wallets, with fancy star badges that you can flip out and show to people, go your hardest.