Just received mine today, went out on my lunch to take some test shots. Overall it's fun so far! Very light. I wouldn't call the focus fast but it is determined. Low contrast focusing can be a problem.
I put them up on flickr, hopefully works:
https://www.flickr.com/photos/28228027@N03/sets/72157653147888009
I put them up on flickr, hopefully works:
https://www.flickr.com/photos/28228027@N03/sets/72157653147888009