I did this on Sunday. She thought at the time I would have to come back for a second visit.
I started contracting, pretty hard (much harder than I've felt until now anyway), and at regular intervals immediately following the appointment. It started at 10 mins apart, and progressed to 6-7 mins apart and continued for about 22 hours, including through the night.
In the morning my husband stayed home from work because we were questioning if it was the Big Day.
Unfortunately it fizzled out that morning, and when I went to my doc appointment, to my disappointment, I was still completely undilated. Like, same barely half cm I've been for 3 weeks.
We've been discussing whether it's worth going back again this week. I'm 40+1 tonight, and going in tomorrow morning to confirm an induction date for next tuesday.

I'm thinking that if the cervix had been more ready it would have tipped off labour for sure. So we'll see how things look tomorrow.
We might consider waiting and only doing the second appointment just prior to the medical induction appointment. That way maybe, with the cervical ripening agents, etc, we can time everything together and get things going with minimal use of pitocin or other interventions.
I'm gonna call the girl back and discuss it after my appt. tomorrow morning.