Got my Stealth yesterday (in MD, ordered Thursday), and it's very nice. Pretty much the same experience as the 3G's Stealth that I had. It fits well, if a tad bulgy on the top and sides, which doesn't bug me too much. The headphone plug is a bit tight and hard to get out, but I don't use those things anyway. It's nice that it came with two of each plug, unlike the 3G version, since they're easy to lose (or, in my case with the 3G, be "misplaced" by a cat).
These things are pretty much lint and dirt magnets, though, as I expect is the case with any silicone case. But it's a fair tradeoff for the protection it provides, and including all these things for $15 is a great deal. (Though if Apple starts giving these away for free as their bumper alternative, I'll be pissed.)