Seems from my observation that they're slow, but legit. However, and a big however here, it seems that the police in the UK know about it, and are welfare checking. I haven't seen enough users talking about their orders to other places or saying what country they're in if they do, so I don't know how anyone else will fare. Could be fine, or the UK police could've alerted other countries governments.
While I'd love to down a big glass of salty drink soon, I am holding off ordering until I hear more from other Americans, myself.