As I said a few posts above, I'm on Jade Quarry, with a real life friend. Probably going to start a sPvP guild of our own on that server, but nothing's set in stone.
Luckily, GW2 allows you to be in multiple guilds, so yeah.
It doesn't matter what server one's on now, but we should try to work out a server for a GiTP guild, maybe around the last beta weekend, assuming they have one.