I failed to fail :(
Plugged the two NetGear Powerline AVs into wall sockets, connected one to my router downstairs, the other to my PC upstairs. Booted up the PC, BAM.
Working perfectly. I get a little under 92 million bits per second to/from my Laptop. Which is perfectly acceptable since I only have a 100Mb ethernet port on each.
Best of all, with one less wireless device in this already overcrowded wireless zone, my laptop’s wireless connectivity has doubled.