A while back this would've been my dream lens, but now I yearn for the drama of ultrawide (read: 12mm on FF). Still this lens is probably more all-round usable; 24 equivalent is still within the non-crazy range for most compositions, and that wide aperture opens up some real possibilities for wide angle shallow DOF shots, which I looooove. Also night skyshots should be awesome with this.
Still, if a compact 10mm f/2.8 were to be released for Fuji, I'd go for that in a heartbeat. The samyang 12/2 is also intriguing.