I am hardly an expert on quick shifters. A few months ago I didn’t know what they did nor what they looked like. I had to ask here what was the device mounted on my new V100. I also have a new 2025 V85. Having played some with the quick shifter I can say I wished my V85 had one. But I think their only real application is for drag racing. Hold the throttle WFO and hit the shifter at what you think the best RPM to do so. It shifts gears faster than any automatic.
Down shifting or shifting at less than full throttle the shifts are no where as smooth. Its not a way to make a manual transmission into an automatic. So unless you want to go racing, forget about it.
The reason I think the V85 could use one is it takes longer to pull in the clutch, shift gears, and let out the clutch while backing off the throttle and reapplying throttle than its takes my V85 to accelerate through that gear, at least the first four.
Pete