1) There ARE non Jedi/sith/etc people using weapons built the same way as Lightsaber technology. Granted, most of them are not as well constructed, and thus not as powerful, but the tech exist.We also know that as least training saber can be constructed with more non-force craftmen.
Note that it is possable for non-force individuals to wield a lightsaber. It just takes lots of practice, and the margain of error is quite small. This is especially true for species with good reflex and regenerations and such.What troubles me is that while wielding it as a weapon may be hard, it is quite useful, though expensive as a UCT(universal Cutting Tool, imperial official name for jedi Lightsaber)