Re both species: Consider this argument. Whenever we participate in the Eucharistic Liturgy (any Form, any Rite), at its very core is ALWAYS the dual command--"Take and eat..." and "Take and drink..." In any language, (the original Koine Greek or any translation, modern or ancient) these words are recited as direct quotations of Jesus, in the grammatical imperative voice, and therefore literally as "divine commands."

We must ask, How do bishops sleep while not obeying these commands by ordering the chalice always be offered at every liturgy? and How can priests live with their consciences without obeying this two-part divine command they have just recited by offering the chalice to those present? and How do we, the holy people of God, get away with not demanding that we be offered the chalice so that we can obey what Jesus orders us to do. 

In the Byzantine church, concomitance is practiced only with baptized infants who receive wine alone, often from the pinky of the priest/deacon.