I was in last week's weekend beta test, and even though I worked that weekend, played through the Sith Bounty Hunter and Inquisitor story lines up to level ten or so for each. Did not have enough time to even try Republic side.
I found myself playing a Bounty Hunter with a heart of gold, and a very very dark side pure blood Inquisitor (years and years of reading Warhammer novels has clearly warped my morals regarding inquisitors, lol).
So if there is a Sith guild for Stonewall, count me in. I especially want to work on a Bounty Hunter eventually as I love the idea of a Jawa companion (they are so darn cute, even though I know under all those rags, he's likely a little rodent).
I am curious though how this whole legacy system works, is it both Republic and Sith? If they allow us eight slots/server then I can easily see myself on both sides of the fence like I am currently in STO. But I see myself starting Sith side and getting one toon upto lvl 30 to trigger the Legacy system.