Nice review, as usual, only one question remaining for me: does the wheel include sideway or tilt actions?
An older M555b that I still own and cherish included them while it also left out the thumb buttons and I basically set the lower thumb button and the left wheel click to "back" while wheel right is set to F11 or "fullscreen" for easy browsing on the smaller notebook screens.
So while the thumb button is typically my preferred method to back out during navigation, the wheel-left click will do as a replacement, but without either mice today feel like I had some fingers amputated and make for early retirement of the hardware.
Most of my wireless mice are MX Anywhere 2S and I have them color coded to go with the various laptops, unfortunately I need to use to already use the two bluetooth profiles to pair them with the Windows and the Linux personality of the very same laptop, whilst the dongles collect in a KVM, mostly so they don't get lost.
But being able to grab any of the pack to do some action on the KVM connected systems via the dongle profile is a side benefit.
Logi flow sounds good, alas I can't see that work with my zoo...