rethmeier, it is very easy to use the live video outdoors. I place a 4x ND gel filter folded twice over the lens, and it works great. Looks the same as live video indoors.
If the Live Video from Phase is similar to the Aptus one,I must say it can't be used outside
and in bright conditions.
The Leaf one only works with interior conditions.
My point is,if you're going to shoot tethered,why not look at the preview on your laptop etc.
The eMotion-75 that I've ordered,doesn't have Live video(at the moment)however the OLED
screen is very good and it's very easy to check focus at 100%.