Zephy, We have a Republic Hoss guild created on the SWToR boards (
http://www.swtor.com/guilds/188104/hos. You can join there if you want. I know Fir had created a Empire Hoss guild, but I don't think they have enough people to get the guild pre-formed (you need at least four people with pre-orders confirmed). Phank has a bunch of old Hoss people and they will have a larger Empire-side presence, so that is prob where we will go for Empire side characters.
We have met the pre-requisites to get our Republic guild pre-created and assigned to the same server with our Ally and Adversary guilds (hopefully). They don't guarantee that we will all be on the same server, so we might have to do a little shuffling when the game is released.
-Zey
P.S. - The next phase of the beta has started and the game is looking much more polished. I'm getting excited for the launch! One cool new feature they added, which I haven't seen in any MMO, is your "Hearth" location (called Quick Travel in SW) works with any location you have discovered on a particular planet. So you aren't tied to one specific location at a time. Each planet has 5-7 locations typically. I thought that was pretty handy.