It is a risk, and only up to you if you want to take it.
I have had a coral beauty in my 58/65 with an S. haddoni for about 2 years without an issue. However, about a year ago I did lose a Golden dwarf angel to that anemone (( had to do with the pink skunk pair being super aggressive )). Now that I don't have clowns with that anemone (( just a porcelain crab )) the coral beauty (( and the other dwarf in that tank )) ignore the anemone.
However, in my 75 I just sold an S. haddoni because of the dwarf angel I have in there. It hasn't be officially classified, so since it is pretty darn rare I didn't want to take the chance of losing that fish -- he was spending too much time near the anemone, mainly because of the clowns.