Last time I travelled through HKG, I noticed an advertisement on the way down to the airside automated shuttle train that those trains will connect passengers to the SkyPlaza soon.

Which led me to think: How is SkyPlaza going to work? SkyPlaza is placed on the East side of the airport, beyond the Airport Express Station which means it's closer to the unrestricted part of the terminal building than the restricted (post-passport-control) part. I have noticed that they are going to put check-in counters in SkyPlaza which suggests that unrestricted people can enter that building. But then if the airside shuttle trains start taking post-passport-control passengers there, then isn't that going to mix the two together?

So is SkyPlaza going to be divided into two areas? One for restricted pax and one unrestricted? If so, are restricted passengers really going to take the trouble to go all the way there?