I dont think this amendment will be enough. This issue isn't going to go away and I think there's a good chance that at least within the decade, depending on the SC seating, that this will be overturned. I believe the original ban on "same-sex marriage" was 60% the last election, and now this year dropped to 52%.
I think we have to be Christians and statesmen at this point and propose a solution that identifies any two regardless of affiliation sexual or nonsexual to have some of the appropiate rights (taxes, trusts, medical) that make up marriage licenses. If this is really about human rights, then lets make it about human rights and not erotic club cards.