Expanding on this: I just finished renovating my home, and being the supersmart guy that I am, had multiple storage areas around the house where the electrical outlets also had USB outlets. BRILLIANT! Except now I just got my new iPad Pro home, and discovered this whole USB-C thing - the first time I've ever beheld these plugs. Which are now threatening to make my BRILLIANT new home wiring obsolete.
I'm guessing that the wall outlets have USB-A sockets - is that right? If so, if I plug a USB-A to USB-C cable into my socket and my IPad Pro, am I right in thinking it'll still charge, but at a slow, old skool USB pace, as opposed to the fast charging that would happen if I plugged it directly into the power adapter that came with the new iPad Pro?