Can a monk using empty body deal full damage to incorporal creatures?


Empty Body (Su): A monk with this ki power gains the ability to assume an ethereal state for 1 minute as though using the spell etherealness, using his monk level as his caster level. Using this ability is a move action that consumes 3 points from the monk’s ki pool. This ability affects only the monk and cannot be used to make other creatures ethereal.

Can a monk using empty body deal full damage to incorporal creatures like shadows (undead incorporeal) ?