Meh, doesn't matter much IMO; it's not like a Jedi gets to choose anything, they just get a basic ugly-looking saber just like a Sith gets. I replace it pretty quickly anyway, no matter what class.
Personally, I like either sending a saber from a higher-level character or reclaiming one from my collection; that way, I start the game with my Sith already using a real lightsaber.
(This did make it so that there was a cutscene where somebody said I had a training saber when I had a real one.
)