Well I'm not going to go into the swamp that non-force users should or shouldn't be able to use lightsabers efficiently or not.
But, it seems a bit strange to me that the Electrostaff has Unwieldy 3, whereas the double-bladed lightsaber has Unwieldy 2. Basically it's the same weapon, a form of staff, though the later is more unforgiving if you hold it wrong.
Shouldn't at least the 2Xblade lightsaber have the same Unwieldy as the Electrostaff?