Got fed up with waiting for Spigen to change from 'pre-order' on all of their cases on their site, along with them not being available direct from Amazon any more (couldn't see them anyway). So went into the Apple store after work, first time I've been in the store here, disliked it, packed and staff not even interested in taking my money for an overpriced case.
I looked at the silicone and the leather for my 6, both seemed perfectly good and usable (albeit slightly expensive). Looking at the colours though I was disappointed. I'd flicked through them online for both leather and silicone and had decided on the black silicone. Once in store and looking at them though, the black silicone was a very dark grey and the black leather was black, not being a fan of the grey colour I stumped up the extra £10 for the leather.
No pics but it's a very nice case, feels great in hand and makes my space grey phone pretty much a black phone which is great. Downside though is it appears to collect pocket dust where the edges meet the glass of the phone making the phone look a tad grubby.