Some people (such as myself) may have purchased the NPE Runn exclusively for incline information and rely on their Stryd footpod for speed and cadence (and power) data.
Because the NPE Runn and Stryd footpod are both considered as footpod devices, they cannot be simultaneously added as a cadence sensor.
Therefore, when you update a future version of Zwift, please add a separate ‘incline sensor’ search box next to the heart rate and cadance sensor search boxes. This will allow users to select the NPE Runn for incline, and Stryd for cadence and treadmill.
Also, I have a technical question. Where does Zwift take the speed data from (the treadmill device or cadence device) ?