Running dynamics in walk activity?

The manual for the the running dynamics sensors (any of them) says that you need to be running to get most of the data. I believe cadence will work for walking, but things like vertical oscillation or ground contact time only work when you are really running.

The science regarding any actual benefit from Running Dynamics to running performance is speculative at best. To apply it to walking would be science fiction.

And many metrics like ground contact time, etc are completely nonsense when applied to walking.

Cadence you get from the watch while walking without RD.

I use the RD pod every now and then more like a toy with no actual benefit. But funny thing, I spotted a pro Japanese race walker in the World Championship using the Garmin RD pod. I wonder whether the ground contact time metric would make sense in that context.

My understanding of the definition of "walking" is there must always be one part of either foot in contact with the ground. Whereas running means you are airborne for at least part of the stride. 

Well, I started with RD several years ago with my FR-920. For me, they were very useful. My running form changed a lot with several benefits, like avoiding injuries (and pain) in my knees due to overstriding, which was eliminated thanks to some metrics like cadence and vertical oscillation. Foot balance was also very helpful.