Title says it all, of course I'd pictured that it would be a high tier research item in the tree. They could be used to defend the colony, not really worker types. Maybe use the centipedes as carriers for caravans, maybe even a option to remove the weapon to it in favor for more weight it can carry.
Of course it wouldn't be very balanced if you had like 10 or so, maybe require a AI core to reactive and reprogram them. This way it could be balanced since AI cores are rather rare.