This is a really good move: http://news.bbc.co.uk/2/hi/technology/3054894.stm With my crimper I'll soon be an electrician aswelll!!
There are tons of "home-grown" non-standard Power-Over-Ethernet (POE) solutions out there. Just take your +12V, put it on an unused pair at the source, and split it back out at the other end. Lets you hide all the wallwarts at the service hub. I don't know what the practical limitations of using spare pairs for power are, but it's pretty straightforward.