Bale played LB pretty much December - March when BAE went to the African Cup of Nations and then got injured. He did very well, he only really started playing in midfield as of the Arsenal game. I can only recall Bale being at fault for one goal, against United. He's come on leaps and bounds and he's just signed a new contract and hopefully he'll get better and better. He makes a good winger, but I do agree with Harry in the sense that he'd be future LB. He overlaps very well and is arguably more dangerous when he does so as he is given much more space to work in.
Still don't know how you can say Vermaelen is better than Dawson/King... especially King lol.