I've been pleasantly surprised in how well Shinkos grip the pavement too, though at 35mph top, I suspect my dirty socks grip the road pretty well too!
So you're not convinced the Shinko's look swell on a Champ, here's another shot.
My latest dilemma is what to do about that broken and cracked rear fender... The more I think about it, the more I think I want to take my dremel and cut it to clean it up and give it more old school dirt bike look. Maybe even rivet on a bit of black innertube mud flap? Is that getting too crazy?