It definately grows on you. I'd like to say it's a different kind of growing on you then some other comics, like Achewood, because so much of my appreciation of the comic is just soaking up impressions of Kochalka's life that feel much more personal than just getting used to an author's voice and comedic timing.
A few years back I might have felt obliged to hate a comic that was about things that were so private (and not the weird bits, just the fact that the comic is about Kochalka's life is makes it an unusually public presentation of things in the private sphere, like his kids or his temper). But as I've stopped being an angry teenager I guess I've gotten a bit more open-minded about this sort of thing without getting furious that it doesn't fit into some pigeonhole of what art 'should be.'