Cloakers were added later, pretty sure along with one of Gage's first DLCs.

Gonna trust you on that, 'cause I started playing only in 2014 or something x)

Pretty sure that he was "re-added" in the release version of the game, because he caused crashes in the beta

Really? I thought they had added the Cloaker for Payday 2 in a patch (he wasn't there on launch). Which is why he says: "You wanted me back? Sure I'm back!"

Nah mate, we always had cloakers in the game, even in payday: the heist

And there's no such thing as cloaker.