John, The traditional clothing you refer to is often called Dishdasha, Thawb or Kandura. Considering the climate in ME I guess it's very comfortable to wear.
Well, hunting can be enjoyed without having latest cammo clothing, optics, tailor made tweed or loden, most recent overcomplicated German contraption or an utterly expensive bespoken gun. I don't care very much what people wear or use as long as hunting and fishing commences across the globe. Dishdasha or blue jeans - whatever floats your boat.