Yes, Bill...I have just softies, so that's why I have not had trouble...yet!! That's why I posted and true to your experience the stats from liveaquaria...

"The Citrinis Clown Goby feeds on the mucous polyps of Acropora sp. in the wild and is considered reef safe but will nip at the polyps or bases of Acropora sp. and possibly other SPS corals. If the SPS dominated aquarium is not heavily stocked with very mature colonies these fish may severely damage Acropora sp. in these displays. "