If you are one that is comfortable and not worried rocking a phone naked but wouldn't mind a skin for some super light/superficial protection... Latercase Kevlar case.
I really am not a fan of Lew and when I read about his story with Pitaka I had no plans of giving him business... but I wanted super-thin and give the camera module a bit of cover/protection and his case is the only one. My favorite case and can't help recommending it.
The phone naked is just too slippery for me. Makes me uncomfortable even using it at home over carpeted floors it's just too slippery.
The Kevlar feels soooo good in hand (@Floss

). Hard to explain the texture but no fear of slipping out of my hand. Perfect fit against the phone body so it feels like it was part of the phone. As close to holding it no case as you are going to get. (I wouldn't doubt if a DBrand carbon skin is just a thick) Molded around the camera module to give it some protection and cut precisely to just show the silver bezels around the camera give it the right look. Seems durable and doesn't leave prints like glass.
I stuck with one case on my Note 8 for entire 3 years. This will probably be my only case I use for the N20U.