Forum:Sith Lightsaber

Double Bladed Lightsabers are often called "Sith Lightsabers" but there are several examples of Jedi who use them. Two that come to mind are: -Bastila Shan (Knight of the Old Republic), Sarro Xaj (Darth Bane: Rule of Two), Shado Vao (Legacy Comics).

Why is called a Sith Lightsaber if Jedi use it?