One of the reasons that I don't think the design looks too bad sticking out of the top is that its all one clean line. The collection cup is not wider than the body.
EDIT: Ok, well it is a little in this picture but this must be an older model, mine is exactly flush with the body. This one does stick out a little. Mine looks like they made the skimmer body wider to match the collection cup. It also came with a nice silencer not pictured here. Must be an old model.
Not my pics but here you go:
I also like the Alloy Mesh Wheel:
