There are games where he's completely ineffective on both sides of the rink, sure, but I wouldn't call him a floater. His defensive stickwork is actually pretty good. That's why he gets a decent amount of PK time.
Kovalev used to catch my eye floating around aimlessly. It's been a while, though.
Some players are so deadly on the counter attack that you kinda want them to be opportunistic.
If my team had Gaborik, Kovalchuk or Ovechkin I surely wouldn't mind trading some defensive board work for having a constant breakout threat. Of course I would feel more comfortable if he was paired with a defensively sound centre.