Tung Chung 'desireable'? If you don't mind living in a concrete jungle and you like aircraft spotting - then yes. It's handy for the airport and buying clothes which can't sell in central, but that's it. And I won't even mention falling cable cars!
And as for the 'Gayviator', otherwise known as 'The Slasher's Arms', just be careful who you talk to. You could be thinking you've just gone out for a few quiet beers, but find out later that you've been recruited for Oasis!