Situation Update: There is no updates! lol
So everything is pretty much as normal - the station isn't as busy as I thought it was to be honest. Except the usual checks for boarding pass/ passport, there is nothing special. All the shops a floor under the airport express is shut. There is a lot of police, couple with what appears to be tear gas rifles but they don't really seem to be particularly on edge or anything. Seems quite chilled.
Kowloon/ Tsing Yi station is closed as you mentioned, but police presence is noted.
On my way there on the airport express, I saw what must be a few hundred black shirt joggers running around the "cycling path" towards the airport. Furthur along that path, there is a police hut so I do not think that these joggers will likely get pass them unless I they force thier way through.
Airport wise, there is a least 3 media presence - also very much as normal. Arrivals is pretty dead due to the lack of people picking up thier friends/ relatives.
Final update is that the Qantas loungue is accessable to us EK users.