aschleman really summed this up. I will say that those bands targeting an older crowd probably could get along fine in street cloths. But an EMO band coming out dressed like the Grateful Dead in jeans and flannel or tee shirts and just standing there probably won't make it. And if you go to see a band already with a dress standard for example Kiss you would probably be disappointed if they where in jeans and teeshirts with no makeup. Or worse yet in 3 piece suits. They have created an image and you expect to see that at their shows. The only guy that can do anything dress wise I can think of is David Bowie. That's what's expected of him. He can come out in a 3 piece suit or high heels. Doesn't matter because you expect the unexpected from him. :D