Well got my first secondary today, this one at IAD. No X on the GE receipt, got to the customs exit and was directed to secondary inspection. Asked a bunch of stupid, repetitive questions that anyone could answer from google (who I work for, what I do) and DHSes own records (how long was I gone, where do I live, am I resident of the USA [idiot, that's a green card is: permanent resident]) plus the CBP officer clearly was bored because 1/10th into the bag search he gave up.
Pointless program if secondaries are not going to be selected by GE kiosk and the idiots in DHS aren't going to use the private info I volunteered as part of the program for secondaries. Probably not going to renew.