I'm not quite sure about the hate for cover songs on here. Obviously if you see SW live, you would love to hear as much of their own stuff as possible, but the point of seeing your favourite band live is to experience their music unlike you would be able to in your own living room.
Now unless the guys have planned a multimillion dollar stage show, i dare say something like a special sw cover of their choice wouldn't go completely unwarranted. Personally, i do get a bit tired of going to see bands that stand there and play their songs straight off the cd without any improvisation or changes. Just my personal preference i guess.