if you're one of those people with the overly stuffed utensil drawers, be advised this will make them even more difficult to open. It doesn't necessarily take up that much room, it's just thick and awkward in the drawer, and suddenly you're rearranging all your spatulas again so you can fit one little pizza cutter. You can't just shove it in on top of stuff and try to work the drawer closed, you have to actually commit to putting it in the drawer neatly like a proper, organized adult.
As far as a standard slicer goes, it's pretty decent. You might need a second pass or so through the pizza just to make sure it got through the crust, but I've found that to be the case with many many pizza cutters.
There is also more cleaning involved, just because it's not a standard pizza cutter and there are some little nooks and crannies for all your tomato sauce to find.