No pictures of it, but during today's oil change while waiting for the oil to slooowly drain through the fumoto-type drain plug, I decided to put the front lower valence / air dam back on. This proved more involved than I expected.
Sorry, I didn't take any pictures.
First, I realized that due to the design of the three-piece air dam, I would have to reverse how my shackles are slid into the 1/2" plate for the recovery points. The problem is that the factory thin sheet metal radiator protector thing juts out too far to the sides, so the bolts for the D-rings couldn't clear enough to slide in. So I took the thing off (which gave me easier access to remove the filter anyway) and I took a hammer to the outer lower corners, bashing them in enough to make for clearance for the shackle bolts. this required a couple of times working the metal, and I'm not 100% thrilled as the driver's side will still be mildly challenging to deal with, but I can get the shackles in and out with the bolts sliding in from the center now.
Then I cut the opening for the side that lacked it (driver's?) and test-fit. Ended up having to trim a little more material around the holes, but I was able to get things to fit. Then it was just a matter of putting the outer parts on, mostly reaching through behind the wheel well insert. Also ended up driving one screw through on each side where the air deflector pieces meet, since they were not lining up real well. It'll do.
Even with my 255/75/17 tires and camber-bolts thrusting the front suspension more forward, there was no rubbing. By like, an eighth of an inch. Even with the mild lift.