Lol, I dress and behave like this... and have a flash car but not Qatari ;)

Locals are usually pretty easy to pick out. Granted it has become much harder to distinguish between the woman than it used to be.

Men will generally be in thobes but it is the accessories that will give them away.... flash pens and cuff links, precise tailoring of the thobes, very well manicured.

After you have been here a while and start to pick up some arabic you will be able to tell them from the rest of the arabs from their dialect.

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"Diplomacy is the art of saying 'Nice doggie' until you can find a rock - Will Rogers"