I have the 10-24mm Fuji and the Zeiss Touit 12mm.
The Fuji zoom is great for handheld photos.
However, when I get really serious about image creation, I use my Touit on a tripod. Colored and B&W photos using the Touit are much MUCH better then the Fuji zoom.
Well... I find the touit 12 completely overpriced for what it do. In fact I was very frustrated by the performance of this lens, compared to my Zf2 lenses on my Nikon gear; day and night. First, fuji LMO is off on tier lenses such as zeiss. Bear in mind that the fuji lenses are "good" because
LMO take care of a lot of things. I have been deceived big time with landscape shoots with this lens. It is good at close range thought. Hopefully, this little lens have a good resale value (for the ones who never tested it). It is maybe the lack of LMO + the awkward Xtrans combination.
So, roughly, don't go in the zeiss X line if you come from really FF CZ masterpieces. The 10-24 should be far better. Anyway, serious landscape and fuji are not friend.
Landscape + tripod out of camera ISO 200 f8
Close range cleaning stuf out of camera ISO 1250 f2.8 ... go figure...