I purchased the color Frost, which is a matte translucent non-color that allows most of the iPhones beauty to shine though. At a quick glance, people might not even notice theres a case on the phone. Its extremely thin, and once its on, you can barely tell you have a case except for the frosted finish.
The case has a nice feel to it, but it does not add any grip. This means that yes, your iPhone will slip in and out of your tightest pockets with ease. On the other hand, if you tend to drop phones, this case isnt going to slow you down.
Speaking of dropping, I did not drop-test this case, but I find it hard to imagine that it would protect your case from a major drop on a hard surface. I consider this sort of case to be more scratch protection than drop protection. I have AppleCare+ in case of a major drop-and-shatter situation.
The Caudabe Veil XT is perfectly cut for every button and port. All of the buttons lie flush with the case, so you can press them easily. The Ring/Silent switch might be a little bit hard to access if you dont have fingernails. The difference between the Veil and the Veil XT (besides $5) is that the Veil has a completely open bottom, while the Veil XT has precision cutouts for every hole, even for each pin-sized microphone hole. This is great except that the area around the headphone jack is very delicate and prone to breaking when you put on the case. The directions that come with the case warn about this issue specifically. And guess what: being the klutz that I am, I managed to break the case in its weak spot. This is a bummer after paying $20 plus shipping for a case. However, this brings up another positive: the case is covered under warranty for one year. I contacted Caudabe with a description and photo of the break, and they are sending me a new case.
Like most ultra-slim cases, this one does not have a noticeable lip on the front to protect the screen when you place your phone face down. Its just flush with the surface of the screen. I do have a glass screen protector in place, which you can see in my photos, so I dont worry too much about that. Unlike most cases this thin, it actually does have a lip around the camera, so when you place your phone face up, you dont have to worry about the camera lens getting scratched by whatever surface youve set your phone upon. This is really what sets this case apart from other cases in this genre.
The Caudabe Veil XT is about as barely-there as you can get. The fit is immaculate. It could be more protective, but for its slimness, you cant be expecting armor. You can find a small selection of colors and sizes of the cheaper Veil, not the XT version, on Amazon: