Yes, I just posted about the Fuji system and it's limitations in the last few days after my experiences in Botswana,.
I'll look for the post, but in short,
EVF = Bad, DLSR viewfinder = good.
The lowest end "Rebel" T3 that was my wife's back up was far more capable in the situations we faced than my XT-1.
EDIT, here it is;
CyberDyneSystems wrote in post #18421716
re: Mirrorless for things like wildlife.
I just came back from Botswana, and included my Fuji kit for portability and unobtrusiveness for some applications. As it turned out our guide Dave had also packed a Fuji with the 55-200mm for all of his short work, relying on his Nikon DSLR with 200-500mm for the long lens work.
My XT1 was great for around the camp fire, or scenic shots, in villages etc,. but was of no use at all for wildlife.
Worse, Dave was completely hamstrung trying to get his to manage the job he was asking of it,. My wife's T3 with an 18-135mmSTM handled the job FAR better. In addition to not being able to see what he was shooting, slow EVF response time, and slow shutter reaction, he was also burning through batteries somewhere around 4 or 5 to one of my 7D2 batteries. We had little to no access to power, so this took his Fuji out of action on day 2 - day 5 when I finally jury rigged a way to charge from the 12volt car battery. (we finally got a place with AC power on day 7)
EVF simply does not offer the kind of required feedback and speed to do the job in an action setting. Yes, someone will say newer EVFs are better, that the XT2 EVF is "Sooo much better it is just like a DSLR" but that's exactly what was said about the XT1 EVF when it came out, and so on,..
I adore my little Fuji, but after this experience no one can convince me that EVF comes close to DSLR for immediate critical feedback. I need to see that the eye is in focus! And the little (and big!) critters aren't going to wait.