ACROD is used in speech (at least among people who have spoken to me!), but GOARCH is not with one exception: when directing people to go look at something placed on the Archdiocesan website (Ex.: "It's on the GOARCH Website, under the 'How To Chant' menu!").
As an example, if people asked about the parish I serve in, I would state that it is a GOA parish, or a 'Greek' parish. I would not say it was a GOARCH parish.