Event Horizon

The artist Antony Gormley, creator of The Angel of the North has created 31 life size sculptures of himself that will be positioned on buildings in London. Here are some questions:
What does it mean that he's only used male statues: anything?
What will it be like having 31 statues in a mile radius of one another?
Is there any reason why he has named it after a horror film?
Is it art?
Have you seen it yet?
And something else: are they a permanent fixture in London?

BBC news story here