Coral branded shrimps are reef safe and interesting to own. It is true they may be territorial with other shrimp but they are scavengers and won't actively hunt anything important. The worst thing they will do is steal food from your Corals.

I have had two for five years.

Ignore the non "reef safe" issue.

Cbs with cleaners
 

i look on my cbs pair as food producing machines as the female give birth with clockwork regularity. same goes for my cleaner shrimp pair. i rarely see conflict between them although the cleaners usually pay acknowledgement to cbs when food issues arise. from what i could see no tankmates have been attacked by any of these shrimps.

And they won't as they are reef safe!

coral banded shrimp
 

Have had many cbs for years. They are "reef safe" in the fact that they won't eat your corals. Like anything else in the ocean, they are opportunistic eaters and will eat anything dead or alive that they can catch.
I think they are the best ornamental creatures "bang for buck" that you can put into a reef tank. I've got a mated pair of them in my 120 reef currently.
Now, if you really want to see fish disappear, try a " reef lobster"