I was filming in one of my friends movie project and I get paid with this amazing monitor. Might buy the Micro Cinema in future or some other camera that outputs video from HDMI. If someone is interested here is my first test with Video Assist and GoPro together.
Really there isn't big difference with ProRes and stock .h264 when filming with GoPro. I was expecting bit more but it looks like the GoPro:s protune really is as raw as the camera can output. And yeah. It is just action camera. Nothing more.