Whoever made the remark that a dual dashcam is about half as good as two single dashcams is smoking crack. Two dashcams are about half as good as a single. I don't want to manage two separate cameras. I want synced front and rear video. Screw having to try to find the same timecoding on two different dashcams.
The Vicovation looks like a nice camera. I would like to get my hands on one to try it out... the feature set for the Marcus 5 looks quite good, but the packaging looks pretty difficult to position and hide properly... not a big deal in and of itself, though. Definitely looks like a nice contender. Still haven't seen a camera that is a definitive Blackvue killer though.