A number of reputable people have felt the effects.. Anthony Calfo himself has been "tagged" at least three times, and I think he KNOWS what he's doing.. Like I said, I've handled zoanthids for a number of years, and only felt it a few times (couple that with the fact that I part-timed in a LFS for 3 years and touched thousands of colonies, never with gloves mind you).. Most didn't bother me, but when I got tagged, I KNEW I got tagged... I know what ones in my tank can do that to me, and 95% of my zoanthids don't bother me..
But it is like bee stings.. Some people may be more affected then others..
Not to mention, I certainly wouldn't risk the lives of my dogs on it.. They pick up lots of stuff on the floor and chew on it, so I put not one, but two doors between the "living" portion of the house and the fishroom.. Dogs are NOT allowed in there, I certainly don;t need the guilt of being the cause for one of them leaving us early..
This thread is a caution about the potentials, not a "Don't buy them cause they are toxic" thread. We give you the tools and knowledge, but only you can put that to work for yourself..