We'll be getting one in a few years.
Basically, from all I have discovered from research, the breed is quite protective of children, but also like to herd them up a bit... become a bit pushy and annoying in their quest to protect. Ongoing training seems to be the way to make sure this behaviour remains acceptable though, and so that's what we're preparing for.
DP has a love of the GSD since he had one as a child. A failed police dog, who spend hours guarding and hanging out with DP... he loved him to bits, and so that's why it HAS to be that breed. We'll also be getting a Golden Retriever at the same time (roughly).