I scraped the chicken strips on the FZS600 (on the rear tyre, front has some left - same pair?!?), but did it on the track. In traffic, speed that asks for that much lean angle is not one at witch I can stop if some shit happens on the road, in my line of sight. So my tyres have visible 2-3 cm on both sides of almost unused rubber, only ever usable on the track. I'm not a racer, but I'm not a poor rider either.
From English riders I met I've heard that UK pavement is a lot grippier (or, better: that Serbian pavement is too slippery, but tyres last twice as long on it) though. Maybe that can allow for greater speed, while still being safe, able to stop in time.