One curious thing...
I've seen Arena live only once, at the Contagion tour (Madrid-Spain). Ian Salmon was at the right side of the stage, and John Mitchell at the left one. When I saw Caught In The Act I realized that the scene position was just the oposite, and every photo I've seen shows them in that way.
Is there any reason? Do they often change the stage positions? ???
I noticed the same thing, and I think it's purely because of that: people should see it :)