I have one for my X-pro 1 and X-T1, the X-pro 1's tool less screw isn't flushed with the base of the case for some stupid reason plus when tightened, a corner of the "flap" sticks out over the battery door. For the flap to truly not stick out over the battery door it has to face 3 o'clock so to speak if 12 o'clock is the front of the camera. If it faces anything but then it sticks out. Or alternatively not tighten it all the way which is pointless.
So on the x-pro 1 I use a screw.
On the x-t1 the tool less screw is flush to the base and when tightened it stops at just the right place.