Dr. Drang make a good point here about the small iPhone form factor. It’s going to be great for some people but being able to choose the larger-sized device with squared edges would be even better. The 6+ screen size is what I want but the rounded edges make it impossible for me to hold securely.
I’m no case-hater, either. The iPhone 5 was the first time I went without and it was fine. I had the 6+ for about 20 minutes before I went case shopping. The material plays a role but it’s the rounded edges that make it a bad caseless fit for my hands.