I give Juicer credit for doing something unique in the way of a retro-design motorbike. At least it doesn't look like a rolling pod. But that system of chains and sprockets looks kind of sketchy with their very small counter-shaft sprocket and exposed chain. It will be interesting to see how well their bikes sell and how long they stay in business.
I read an interview with David Twomey, the creative mind behind Juicer bikes, and got the impression that he's more of an artist than an engineer. The bikes are essentially hand made, by him, and in very limited numbers. Taking the thread in this direction was a bit of a red herring. I was just playfully trying to see if I could get our friend Nitrowing to admit he liked the looks of any electric bike.
As far as the business model of Juicer, ... that's a done deal. 2020 was hard on a lot of businesses.
http://www.juicer.bike/method.html#contactHopefully Mr. Twomey has moved on to a position where he can contribute his considerable artistic talent to some product that will achieve higher market penetration.
Meanwhile, the Kosynier is still in "pay now, get later" mode.
https://kosynier.eu/vintage-electric-bike-kosynier-delux/I prefer the Juicer. Batteries stacked in a way that they resemble cylinders seems a lot less pretentious than gluing on a fake plastic engine. When I was around 8 years old, I received a present of a toy engine that mounted on the frame of my bike. It had a lever that you would yank to spin an internal mechanism that made Vroom Vroom noises, and that was all it did. I thanked my dad when he put it on my bike, but I remember feeling a bit embarrassed by the thing.