The Silicone cases do have more grip but one of my biggest reasons to go with Leather is the metal buttons. Whether its a garbage china-made $3 TPU case or a garbage China-made $40 Apple TPU case, having to press a button through a piece of rubber is annoying. Especially on the X which requires you to press that damn side button every time you want to turn on the phone.
I get leather every time and complain how slippery it feels. But metal buttons are important to me so I may have to stick a PopSocket on it. (I can't wait for the glares from people who see a $1300 phone in a $50 leather case with an ugly $3 toy glued on the back of it)![]()
Agree, non-buttons annoy me on those other cases. Apple used to just cover the buttons with leather but switched it up for the 7. Being easily clickable is especially important now that we double click to use Apple Pay and use a hold-down for Siri.