there was rumors (back before the controller was revealed) that some nintendo rep said that the there probably wouldnt be any demos. I find that hard to beleive, I hope they find a way, and you have to consider that there were rumors and "leaks" all around before the NRC was shown, and I dont remember anything mentioning that it would look like a remote for a tv.
EDIT: as for the long cord idea, I could see people smashing the controller around, but you have to cosider that stuff in store kiosks get ruined all the time, I dont know how many times I have seen DS with the screen scratched to heck by some a**hole. The point is that if someone goes into the store planning to bust up contollers, they can do it whether it is anchored or not