I find i`m using it often on my 2021, more so from 3rd upwards where if you get the `tecnique`/timing right the shifts are barely perceptible. Similar to that of a bike with no quickshifter, really.
Downshifts however are crap, from the amount of pressure you have to apply to the lever and the jolt when the lower gear is engaged it feels crap - a bit like a bike with no quickshifter,really....
Downshifts may be better when riding in a `brisk` fashion with higher revs involved.