Interesting....

I'm in D.C., and I believe that the rules are pretty loosey-goosey about those kinds of things. I'm not sure that I want to fool around with getting behind the dry-wall that's attached to the brick (likely with insulation in between, right?) only to find that I've punched holes that now need to be patched, and what do I have to show for it?

My flate wire approach will simply just have to work. I'll be relying on paint to provide concealment, likely.