Why do I have two sets of vibe data?

One thing that strikes me about your plots is that they are much more ‘spikey’ than mine. What might that signify – more aggresive flying than my ‘scale’ style?

yes, this is a bit agressive flying on purpose - to get the idea how vibrations are handled by silicone mounts. And in my case they are from quadcopter, not heli (which should not matter for getting 2 different readings from 2 IMUs).