Don't bother. Silicone cases are dirty and lint magnets.
That was certainly true of all of my previous silicone cases attempt, but I got a red one for my 6+, with the intention to return it as soon as I get better protection, and now that I've handled this one non-stop for nearly 2 days, I am actually very impressed with this case. It feels quite good in the hand, provide just enough resistance to feel secure when held, yet slips out of my jeans pocket with very little snagging or resistance. Whatever secret magical treatment they've done to that silicone it does not attract any lint or dust at all! Very impressive and as I said earlier, very pleasant feel in the hand.
I looked at the Apple leather briefly, but then I noticed that the felt/microfiber lining inside the leather cases is not going up the rounded sides of the case as it is in the silicone one. Also, the all the light colors of leather on these cases turn really nasty looking very quickly, within just a few weeks.
In any case, I am still quite undecided as to what I will end up putting on my precious+ to protect it without making too big or thick, but despite the high Apple price for a silicone case, it is definitely a premium silicone case is there ever was such a thing. What a very Apple thing to do!