Don't have a video or pics of the flashing, but I am always on flashing/blinky during daytime. You can see me coming a mile away, or if it is flat even further. I am using 1000+ lights on flashing.. The reason I use heavy lums is because I am out in the ball out knock down drag out traffic!! Car were passing me at 50mph+ and within a foot.. Now with the blinkies, not so close, they give me way..

IMO, blinky doing the day is a good thing. I wouldn't go without it, unless I am on a group ride or on a trail/MUP..