OK thanks for the replies, apart from the bizarre sideline .. !
Um, so you always have to have a boarding card? Meaning that you can only use the lounge when you are dead heading. Which I guess actually makes sense, as if you are operating, you're not likely to get the time before or after the flight to be in the lounge.
Maybe its a really good idea! 400 Euros is then pretty reasonable for a years worth of comfortable travel eh?