Though it didn't reveal much in the way of specific functionality, I was impressed by how quickly the troops depicted in the linked article's YouTube video were able to remove their rifles from their odd bike mounts. Their formation cycling was also impressive and fun to watch. It's basically the same as marching in formation, but the use of bikes brings a speed and fluidity which marching based movement simply can't touch.The rifle mounts puzzled me too, must be more to it than it shows as it seems impractical and awkward.
Bicycling Mag had a story a few years ago about a guy who hunts with his fat bike.
I'm always fascinated by interesting use of bikes.
I've wanted to write an end-of-the-world story where the protagonist uses a bike for transport and carrying supplies and items for survival through all kinds of terrain. Sorry, kinda off-topic.