Unfortunately, they are rare on the street. I saw only very few and did not have the chance to chat with the riders.I've heard, the Pinion is not as fast as the Di2 and has some disadvantages under load. Is this true?
Regarding the ST5, I expect a classic drivetrain - but something like this on the brakes:
View attachment 18063
I agree. I don't expect the Gates carbon drive on the production model either. There are lots of problems with Gates drive and the torque sensor.
I have heard good things about the Pinion. I have not used one myself for a long time but I did try one. Many traditional mountain bikes are spec'ing the Pinion to reduce the clutter near the rear wheel.
My concern is, big manufacturers like Trek offer bikes starting $2K and stop at $6 or $7k. But, Stromer starts at $5k and goes upto $10K. They are standing true to their tag line "We start where others stop"...