I used to have a Zabrak Grey Jedi/Bounty Hunter character. Started in the Jedi order and one day got angry with his master and accidentally killed him in an argument. After that, still angry, he joined the Sith but realised after a shorter while that they were even worse. His history went blank there until he appeared again one day under the guise "Razor" The Bounty Hunter with the Teal saber. (Pretty much he went on a journey and used what he knew to create a lightsaber for himself. He is neither good nor bad but lives in the moment, utilising what he knows to assist him.
Though in the end he only knew basic abilities, and none of them with much refinement. For example, he can force run, but his style is sloppy and he can't do it for long. In addition, his lightsaber combat is basic at best, he knows Shii-Cho and the beginnings of Makashi and some Djem So, with which he created his own style which is again unrefined.
Other than him I've used Jedi and Sith. So I'm good either way, hopefully.