Michelle Obama forgoes headscarf in S.A.Haven't read enough articles to form an opinion on her decision, nor do I know enough about the S.A. culture either. What I do know is that if you are trying to make an impression, then why not get active in the game and go with the flow? I/E: If I'm going to a business mtg to discuss opportunities and other economic events with business colleagues, I make sure I at least wear a shirt and tie, as that says, 'we're on the same level', you can talk to (and hopefully trust) me.
Doubt this will be a big factor on the price of OIL. But the decision to opt out of partaking in their culture and wearing a headband, will reside in the minds of many.