Okay, so let's hear from those who've actually received their skins. If you include the date you ordered, the date you received, and where shipped to, that would help too.

I got the white frost one for my 15GB. Ordered July 10, received July 25, NYC. No screen protector yet, but I did get the Maclear as well.

Maclear - Eh. It's all right. I'm using it for now until the screen protector comes, but in general I'd say it's better for general storage or use with the iPod w/o the skin. When the skin is on and the whole truck is in the Maclear, I find it's just too hard to hit the buttons. It's almost like you have to stretch the plastic down to make contact. Also, the case is a little wonky and out of shape, but that's likely to smooth out over time as the plastic relaxes (assuming you keep the iPod in it).

Exo iSkin - Fab. It was easy to stretch it over the pod, and I like that you can remove the nipple of the belt stub. Also, the metal disc for the belt stub is not in contact with the iPod's back, so scratches are unlikely. I may put a piece of tape there for extra protection, as it would be easy to remove the tape and residue later if need be. The fit of the skin is right-on for my 15GB G3, but it's hard to operate the hold switch through the opening even though it lines up perfectly. This is because the hold switch doesn't have the "nub" that the old pods did, so you can't get a good grasp on it.

Belt clip - Seems to work fine, though I haven't tried actually hanging it from my belt as that's a look I'm not going for in NYC. ;)

So yeah, that's it.