I see. That clears things up a bit. I definitely prefer tanking (my main is a jugg), but I created a marauder on a more popular server until I can transfer my Jugg (playing as a tank isnt fun when there arent any groups), so DPS is somewhat new to me. I guess the offhand is practically negligible when you factor in defense, but it's better than nothing. It seems the real benefit is the possibility of better stats (DPS related) from a lightsaber versus a shield.