If I can use them to shoot videos and make something cool like the japan tour thing[1] I would buy them.

[1]: https://www.youtube.com/watch?v=t3i5asc3qI4

EDIT: actually looking at the snapchat spectacle webpage, it looks neat and I can see myself buying them. Just not at that price (130GBP) because I will probably not be using them a lot. But if there is a promotion around Christmas why not.