IATA-WAS has just circulated the following 'clarification'
Several IATA member airlines have reported being told that the new security directive on large electronic devices also applies to devices (including electronic flight bags) carried by airline flight and cabin crew members. We have been in contact with both the U.S. Department of Homeland Security and Transportation Security Administration headquarters in Washington, DC and have been told specifically that the new directive does not apply to flight and cabin crew devices.