I have used this fish many times with great success including in reef tanks. Here is a history of the tanks I have used them in.
My first encounter with this fish after quarantine I put it in a soft coral prop tank for aiptasia control. this tank housed mushroom anemones (discosoma and ricordia), a few leather corals, zoanthids and anthelia. They nipped at the anthelia but didn't pay attention to anything else. After all the aiptasia were gone I moved them to 225 gallon SPS tank with aiptasia. they did a great job at ridding that tank of aiptasia. This tank contained many large sps colonies )acroporiids, pocilloporids etc.) as well as a large sebae anemone, and a colony of blue cespitularia (a xeniid) they ate the cespitularia but nothing else.
My next use of this fish came in a clients tank that had some aiptasia. I bought 2 fish and one died in quarantine. the other has been in her tank for about 8 months and has eaten all aiptasia. This is a 150 gallon tank dominated with, leather corals, lps (euphilia, trachyphilia etc.) and mushrooms, The filefish haven't bothered any of the corals. Interestingly, This tank also had anthelia (a cutting from the same colony in my prop tank) but the filefish in this tank doesn't even touch it.
I now have a single new fish in quarantine for a new seagrass tank I am setting up.
I hope this info helps you make a good decision. This fish has quickly become one of my favorites for its beuty as well as its utilitarian purposes.
Thanks,
Kyle.