I tried using a few cases. The Samsung Alcantara I used the most but I'm mainly using it naked with a dbrands black camo skin on the back. And I only started using a skin because I got tired of all the fingerprints.
I have a Pitaka case that meets all my needs. It's a minimalist case that provides some protection, obviously more than no case, is very thin and allows you to use magnetic mounts without sacrificing wireless charging. It's expensive, but so is the phone.