I still don't know what to do with my Fuji setup. I just took a weeks worth of "days out" pictures into LR, and they're okay but nothing makes me think "nice". On one hand I knew a crop format wasn't going to match my FF DSLR, but on the other the only plus point is size and I don't know now that is enough for me now taking into account performance and IQ deficits. I don't find the 18-55 even close to the Canon 17-55 at all, even the 25-105 I prefer if I'm honest.
I just got hold of the 56mm and whilst IQ is nice, the performance sucks. In low light (where I'd use f1.2 a lot) it really struggles quite badly. Even in good light it's not that quick, I'm used to the Canon f1.8 which is quite fast I guess.
On paper the system is great, but in use it does frustrate me at times