I saw another nuvinci bike by Penn station, but it has the red light so I couldn't use it. When I docked by etc area, I saw another one and checked it out to ride it a bit. The gear selector has a bit of play before it actually adjusts up or down, which I guess could be an issue with this system since the shifter requires 2 cables to pull against each other in order to shift up and down, and any bit of slack in tension will result in looseness of shifting.

Also checked its gearing, which is 1:3 vs 1:2.4 on the s/a setup. This gives it a 78 gear inch vs 62.4 at the highest gear, which allows me to cruise at 21mph @ 90 RPM or higher cadence, while on the s/a, I have to go at a panting 113rpm.