>>3248631> Already have an X-T1 but really wanting to pick up an X100F for the size.The X100F is in roughly the same size class as the X-T1 with a pancake lens like the 27/2.8. Granted, that combo is a stop slower and the viewfinder hump on the X-T1 makes it a little bigger (and a little thicker), but I wouldn't think the size difference between the two is not really great enough to justify buying an X100F just on size alone.
http://camerasize.com/compact/#520.388,705,ha,t 