Might be a tough question for a Nikon camera forum, but there probably is someone who can give you an answer. I can say that L brackets do give a camera a different feel, but, at least in my case, one that I became accustomed to rather quickly. They are great for tripod use, of course, and for off camera flash when used with one of these or the adjustable mount model, and well worth the effort.
While you are waiting for a more direct answer, if you have not already done so, you might want to Google <fuji camera forums> and see what you can find. I did briefly, and came up with nothing. You might have better luck. Or maybe that's why you are here - you already did, with the same result?