X-shooter 1: One of the most famous Turkish photographers, Ara Güler (honoured as “Photographer of the Century” in Turkey), seems to have made the switch to the X and grabbed a Fujiflm X-T1 (he mostly used Leica for his work). See the image at the German site Spiegel.de. [UPDATE: Ara Güler died on October 17, 2018, at the age of 90. Check out this New York time article.]
X-shooter 2: It looks like Jane Goodall, the world’s foremost expert on chimpanzees & UN Messenger of Peace is also an X-shooter, as she carries her Fuji X20 when hanging out with animals and people. See it here on her website.