Grabbed the HunterGatherer and pink Fragment Design sliders at a street fashion store on the Lower East Side of NYC called Reed Space. Very cool cases. The HunterGatherer looks *much* cooler in person that it does on the web, and the Fragment Design case is just crazy bright and very fun.
One thing worth noting: I did "try on" the cases in the store before purchasing. I know some people have complained about the sliders being too tight . . . I don't really buy that there's the difference in size that some people have claimed between the 3G and the 3GS, but there is *definitely* a range of tightness for the sliders! The first slider I tried on (the pink one) got stuck on my phone; it took about five minutes for me to wrench my phone out of it, finally by getting a fingernail between the top of the phone and the case and pushing it out from inside instead of pulling it from the bottom. I then tried the HunterGatherer and it slid on and off much more easily, and a second pink case was very smooth as well. I definitely recommend trying any of these cases on your phone *before* purchasing, and if you have to push your phone in with any force, run away and try another one!
One thing worth noting: I did "try on" the cases in the store before purchasing. I know some people have complained about the sliders being too tight . . . I don't really buy that there's the difference in size that some people have claimed between the 3G and the 3GS, but there is *definitely* a range of tightness for the sliders! The first slider I tried on (the pink one) got stuck on my phone; it took about five minutes for me to wrench my phone out of it, finally by getting a fingernail between the top of the phone and the case and pushing it out from inside instead of pulling it from the bottom. I then tried the HunterGatherer and it slid on and off much more easily, and a second pink case was very smooth as well. I definitely recommend trying any of these cases on your phone *before* purchasing, and if you have to push your phone in with any force, run away and try another one!