The Shield really is a sweet little gun. I love the safety on it. It stays off when you want it off, and on when you want it on. Carry it either way you choose and be confident nothing will change.
I got the first one off freight at my LGS a few weeks ago (9mm). I was back ordering a 4.25" M&P 9mm the other day and they were saying that they have a huge waiting list for them. Glad I got mine right away!