@hannes thanks for the write up
I have been seeing these oBikes around the city in really really random spots, but never got around to experiencing it for myself.
I'm on the work PC, so can't sit here and watch your youtube clip, not sure if you mentioned the cost, but I am hearing it's 15NT per half hour? If the bike itself is higher quality than the Youbike, I see this is a valid fare.
For Taipei, my main concern is convenience. If it takes me 10 minutes to locate an oBike, I'm pretty sure I've already passed 1, maybe 2, Youbike stations. There's no doubt in my mind, I'll go with the cheaper and more convenient option unless my final destination is nowhere near a Youbike station. It's highly unlikely I'll end up at a place farther than a 10 minute walk from a Youbike.
I agree that oBike could work really well in places like Hualien, Puli, Shuili, JiJi over in Nantou or even Tainan where there's not too much sidewalk space or park area that's not a memorial or old train station for a Youbike station. This is where the oBike may prosper. However, locals to those towns will definitely think twice about spending 15NT on a half hour ride.