Based on my research, you get the speed of 2.4 ghz wireless (which while it works, it could be better) with the inconvenience of having to use a cable. Performance also depends on wire insulation, which often isn't built for running PLC. However, you can't beat the "plug-and-play" of wired there, which might be attractive.

I'd recommend getting a mesh router setup, gives you 5ghz wireless over the whole house (assuming proper setup), and some mesh points support wired output (effectively having a wireless bridge)