Preface: In regards to street riding:
Many posts and replies seem to refer to "dragging the knee" as some sort of rite of passage, or that you have arrived on the sport bike scene.
Why is this? Isn't scraping the pegs more of a testament to lean angle and skill/confidence?
I could lean off the side of my bike and drag my knee with ease, but I'd look like a contortionist....yet the peg feelers are still a long way from scraping.....dragging the knee simply does not equate to skill, speed or riding ability...kind of reminds me of the loud pipe/posing relationship.
I've witnessed this when watching the early morning Sea to Sky crew coming back towards Vancouver, and particularly at the Brittannia twisties, it's comical to see riders of various skill level hanging so unnecessarily far off the side of the bike, for what looks like an attempt to get the knee down.
As well, you could still have a healthy amount of chicken strip combined with scraped knee pucks whilst doing the aforementioned unnecessary contortionist act.
So why the obsession? How about scraping the pegs first?