Jeffrey Bell argues that same sex marriage will be an issue in the fall. Here's a point I haven't seen elsewhere and am not sure I believe:
...passage of the amendment would bring an abrupt end to same-sex weddings in California without in any way invalidating the marriages performed during the four-month window between mid-June and early November. In these four-plus months, same-sex marriages performed in California will have the force of law thanks to the state's Supreme Court, and even after a voter reversal, should it occur, California officials may have no ground for regarding the couples married during the window as anything other than legally married.
A lot relies on the word "may" in that last sentence. California officials also "may" use the amendment to divorce all those couples.