I got mine about a week ago and it is as I expected. I had the combo with my iPhone 3GS and wanted the same for my Samsung Galaxy S II. The case is even better in that it slides on and off very easy but is secure. Which is great since I like to change batteries and use it on my car mount. No cases will fit the car mounts or the desk mount for that matter. It is a little harder then the TPU case I have, and it has that little notch above the volume control, only good for the International version. Same as the TPU case. I wonder if this one might fit that or is something that the case manufactures don't realize the difference. The holster will even accept my TPU case, since I got the combo that is not an issue for me, but if you want a holster only and have a slim case already this might work. Compared to my 3GS holster this one is a tad thicker. But it is in no way intrusive. It just works, since I hate to have a phone in my pocket. Great quality. One issue that I have is if your using headphones or one of those audio cables for your car stereo, make sure the connector is thin. The opening for the 3.5mm jack is rather small. The connector will only go so far before it gets obstructed by the case. I pick up one of those Audio/Mic adapter for my cable I already have. Seidio Audio Adapter with Mic 3.5mm Male to 3.5mm Female at MobileCityOnline.com
Hope that helps.
Hope that helps.