I also delivered my twins naturally just 1 and half weeks ago, Twin 1 (Ruby) was head down and engaged, so there was no reason not to attempt a natural vaginal delivery, Twin 2 (Leila) was breech, in the end I delivered her breech, as this was the way she chose to come out, after delivering Ruby, my contraction slowed right down, and then all of a sudden, with a huge explosion of waters all over my OB, Leila shot out feet first. I had 18 mins between the two, and a labour of 4 hours and 30 minutes. I had 13 people in the room at the time of delivering, my Husband was the only male, and then for the next 5 days in hospital, had people coming in, in pure amazement that I had delivered naturally. So I say if Twin 1 is head down, then go for it.