Anyone had experience with a cowfish?

[revgeoff]

So, I would like to add a cowfish to my tank. It is easily big enough to accommodate, and currently has several fish including a peaceful Queen angel, naso tang, beta, yellowtail damsel and some peaceful wrasses.

What I am worried about is the toxin release that I keep reading about - where it kills off the entire tank.

Has anyone kept one of these guys or know of any good or bad experiences?