V3 eye sensor on slows start up
On start up, with the EVF mounted and the eye sensor enabled, there is a banner across the center of the LCD or the middle of the EVF if you've quickly moved the camera up to your eye, telling you the "eye sensor is on". You can't see through it, so if you're used to using an EVF and instinctively pull the camera to your eye, you have to wait before you can find the image in the view finder.
The camera turns on faster than my V1 but can't take a photo any quicker if you use the EVF.
Edited to add that the banner lasts for 1.5 seconds and you can dismiss it by half pressing the shutter.
Maybe there a way to disable this but I haven't stumbled on it yet.
On the plus side, anyone worrying about how fragile the connection between the EVF and the camera body can put that out of your mind. It is rock solid when mounted. Maybe they'll come up with an optional EVF that has a GPS chip inside.