I've been loving SoD. I saw on the official WoW forums this same topic being discussed the other day.
Interestingly, I saw some conversations about server culture specifically regarding GDKP. Players were reporting vastly different behaviors depending on which SoD server you were on! I'm not sure I ever saw GDKP on the server I'm on when I was hunting for a guild. This is of course just an anecdote.
I found this interesting since perhaps the only real difference between servers in that game is players. The content itself is largely the same. In a game like Ashes of Creation, not only will the players and player culture vary, but the content too could vary.