Had mine for just under 2 years.
Not a single problem, other than it killing 1 VERY small hermit. The hermit was like 1/2 the size of a pencil eraser lol.
I had him for 90% of his life in a 29 Gallon w/ a Black Saddle Clown, Yellow Watchman, and Midas Blenny.
I recently upgrade and moved everyone to a 90 Gallon AGA, still no problems.
They do eat pods though, so unless you have a larger tank I wouldn't get one if you wanted any kind of Dragonette in the tank as well.