There's one little caution I should perhaps mention, although I don't really know how significant it is, if at all. As homeplugs become more popular, there is in theory at least an increasing possibility that a neighbour who is also using homeplugs could inadvertently connect to your network and use your internet connection, or vice versa. Most homeplugs are, I believe, set up by default without encryption, so I think that it would be sensible to configure them to use encryption.