Not really an extended leave post, but I figured this would be a good place to clarify my situation.
I am currently a member of both ToA and Servants of Fortuna [SoF], representing SoF most of the time and my account currently is on Yak's Bend, home server for SoF.
SoF was my first guild in GW1, from 2006 to end of 2009 and I have many friends there too. The guild was almost dead but a lot of people have come back for Guildwars 2, and we also have a lot of europeans so I feel it's better for me to play with them right now.
However dungeon instances can be accessed from any server so
I can join dungeon runs you form! (I wonder if it works for personal story too.) The guest feature will also be released at some point and will help me group with ToA people. Finally, I will also be hopping on to ToA guild chat to say hi as often as I can