Thread:Linathan/@comment-26231443-20150823184520/@comment-26140304-20150824003707

Elgifts do not remove the default Extra Skill. They simply add a second Extra Skill to the unit you designate.

And yes, "Sphere Restriction Removal Extra Skills" remove the restriction of equipping two spheres of the same type. Thus, you can have sphere combinations like two Malice Jewels, two Elder Hats, etc.