i have played mmporpg for many years. they have in game forums and in game chats. the "allies" (ally, group, etc., in eR is MU) refuses to use it because does not have as many features as IRC (rizzon, etc.) and because it is suspected of any bug that allows enemy to read.
so, eR team, can you generate confiance on in game chat for military use? that is the question.
This,I doubt that ingame mu chat will see much activity,even if it were perfect just couldnt replace the old means of communications.