Seriously tempting as a street shooting body, whats the AF performance like now with the updates?
It's pretty good, there are a couple of tricks, as ever..
Put the camera in P or a creative mode.
Switch off touch shutter.
Select your AF pattern mode, flexizone multi (camera decides point of interest) or flexizone single (single af point, you decide point of interest) and pressing the bin button in shooting mode centres either your zone (centre 9 af points covering a large square grid almost the full height of the frame) or your single point.
You can also select a single af point virtually anywhere on the frame.
I find using the felxizone multi centre works brilliantly fast in one shot mode, if you are going to use AiServo mode I would be tempted to keep the continuous focus on, although at the cost of battery life.
As always, the speed and accuracy will depend on the lens in use also, the stock STM is fast, accurate and quiet, although the long end in low light slows a bit as the f-drop takes effect.
Setting the camera up as above worked really well for me with even fw1, with fw2 it just got faster.