It's tennis, which is a fiercely individual sport, so you are not always going to get the same amount of sportsmanship you do in rugby.
I've talked to a couple of people who played on the junior circuit with him. They say much they same thing that many of you do - that he is sometimes a hard guy to like, due in part to his reserved character. He is a young bloke with a lot of money and a lot going for him, it is easy to poke holes in his personality but I'll wait a few years before judging him fully.
I still remember drinking at the caxton or on the train after reds games in 07,8,9 and regularly hearing all and sundry ripping into quade cooper. He is much more popular nowadays, no doubt due to his on field performances, but also the fact that he seems far more mature, humble and gracious off the field. Maybe in a few years we might feel the same way about bernie.