I was fortunate enough to do my second wedding with my Fuji X-Pro1 and X-E1 as lead photographer.
I would not recommend this to anyone shooting an event unless they are very familiar with using the Fuji camera and, have assistants, and if it's the only camera system you have at your disposal...
This is a teaser from Sunday.
Family Fun - Muttart by Camtography, on Flickr
Did a family shoot, taken with the 35mm wide open. And with the new firmware update I had no issues locking onto my subjects. It actually worked well shooting kids!