PS Shrimp eggs almost always hatch. The Larvae are great food for so many animals in our tanks: smaller fish, coral, crabs, worms, bugs, etc. are all healthier when they eat live food. I keep a couple PS in almost all my +40 gal tanks.
This is one of the reasons I only occasionally use filter socks. Too much good food is stopped there, kept from reaching the Refugium and circulating back to the display.
There is a cool article in this old Sea Star about how interesting PS are in their mating behavior, i.e., Simultaneous Hermaphrites
http://www.utahreefs.com/SeaStar/wmasSeaStarOc00.pdfAloha