Karlovic has won 2 out of his last 10 and is injured. So yes, I do like this draw. Round 2 is very winnable, and Tipsarevic has only a 6-7 record at Queens. He will have to take his chances, but he has potential for a decent tournament.
Ivo is the most dangerous opponent, who only could get in 1st Round. By this, I personally am waiting anxiously match tomorrow.