A lot of people will adapt lenses. I personally am using the sigma 18-35 via the Fringer. I know several others that prefer cinema glass and will go with Rokinon/Samyang EF DS line and just use a cheap dumb adapter.
There is cinema glass made for the x-mount, but from what I've read, you get better quality from going larger (less focus breathing and softness).
Finally, if you have the $$$ then you should naturally go for the MK glass that fuji makes themselves. Many would agree that it is the best zoom cinema glass but at $3-4k a piece... currently out of my budget.