If it's about safety issue then I am the only one in my home and wisely store the replicas and use it, so no need to the locker.As i understand its not about wich matrial is used or if thieves can take it.
Rule said that you cant direclty use it to make a danger or avoid a danger at your house, corect me of im wrong.
But if it's about the general security then i have to put one in my home.
I'm also floating in the sea here (don't know exactly why) but i bought one anyway..