I haven't. I usually just try to get it up in the gear that I want to stay in. I seem to remember something about bending or causing damage during shifting in a wheelie, but I will have to research it. I can't remember what it said, but there are plenty of folks that I ride with that shift in wheelies, and they haven't damaged theirs yet? [?]
-Cops want a hot pursuit, so entertain them! -Shadee