I have yet to do a track day on my '11 Ninja but others have. I really think you would need to be going hard on a track to scrap pegs. I don't know anyone who can ride the ninja to it's limits. Not saying you can't though.
I guess what I'm trying to say is that you won't sacrifice much with the Ninja.
I guess what I'm trying to say is that you won't sacrifice much with the Ninja.