That is very tricky with an international ticket, checking in, obtaining a boarding pass, then "immediately cancel it once you enter the SkyClub"? So you ask the agents in the Club to refund it? What is your reason? "Now that I had a drink in the overcrowded SkyClub, I no longer want to fly."? Sounds very strange to me.
If the SC is as bad as many people say it is, why would you even want to enter it?
Oh I wouldn't do it. I have Sky Club access anyway, so it's a non-issue for me. I was just reading on another forum here where people admit to buying refundable tickets, check-in and clear security, then go to the airline's lounge while waiting on family or friends (or even just to go to the airport), and then refund the ticket after accessing the lounge. And in typical FT fashion, it started a huge debate over whether that was right or not because of adding to the overcrowding in the lounge and adding to the length of the security line and whether that was right to do to the airline, etc. etc.