Moto G should I receive text messages via google voice app or messaging app

[AC Question]

What is the reason to chose whether to receive text messages via Google Voice app or via messaging app. I do not have phone data so only have internet when there is wifi around. If I receive text messages vial Google Voice app, will they come in when there is no wifi? Right now I am getting messages both on google voice and the Moto G messaging app. Android Kitcat 4.4