I think people need to stop blaming Kemba's poor shooting percentage entirely on him having to take tough shots at the end of the shot clock. He's never shot a high percentage even going back to his college days (40% and 43%, respectively, in his soph and junior seasons), and he now has two NBA seasons under his belt where he's shot under 40%. It's an issue that goes beyond just end of shot clock scenarios.
Where he makes up for it, though, is with his clutch shots, an exceptionally low turnover rate, good rebounding for his position and his now-elite defense.
I love Kemba and think he's among the most underrated players (not just point guards; players) in the NBA. But my suspicion is that his somewhat frequent 5-18 nights bring him down in a lot of people's eyes. While I don't think he'll ever shoot for a high FG percentage, if he could get up to around 42-43% I think people will start to pay more attention to all the other things he brings to the table.