I bought a silicone case today, and I have a leather one on its way.
Personally, I was surprised at how soft and slippery the silicone case is; I thought it would be grippier and have a more rubbery texture. It almost feels powdered. I really wanted the case to be as grippy as possible because I feel like with the Plus I'm going to be juggling the phone a lot to reach different areas of the screen when doing things one-handed.
I like the look of the leather case a lot better, but I can't comment on the grippiness of it yet. I'm hoping it's even just a little better than the silicone case. One nice feature of the leather case that I believe is going to really make it the better of the two is the fact that it will age and wear over time, giving it a unique character. I love leather; so it's the case I really want.
I have the leather (black and brown) and they feel great! They look very nice as well. The case really dresses the iphone up well. I haven't been able to touch the silicone case yet, but have seen them...
Tried both leather and silicone in the store and you can't go wrong with either. The leather feels very nice, for sure.
I ended up with the silicone actually. The Apple silicone feels so much higher quality than the usual silicone and plastic cases from 3rd parties. I was really impressed with it. It was grippier than the leather right off the rack, though if the 5S leather cases are any indication the leather gets grippier over time.
Bottom line you can't go wrong... Both really high quality cases.
I went through 2 red leather apple cases on my 5s and both turned black on the edges after a very short amount of time. Eventually I traded for a black case and was more than happy with it. For the 6 Plus I was gutted to see Apple had left the bottom exposed, so bought a spigen case. Ended up not being happy with the bulk the spigen added so looked into the apple leather and silicone cases again. Vowing only to ever get a black leather case again, I was intending to get the black case but then saw the midnight blue and loved it. It's dark enough so that when edges do turn black it won't be that noticeable, but is also a very nice colour. My advice is if you want a case that isn't dark, get the silicone. If you want a leather case, get the black or midnight blue. Any other colour leather case, and in 2 weeks it WILL start to look a mess
Can someone post some pictures of the Apple leather case on the 6? I've been using it on my 5s over the past year and have been very happy with it but I'm a little worried about how the exposed bottom is going to look. The ones in the Apple store app only show a front view.