I finally got to see these beauties in person. I did the "hand test" and definitely had better luck with the 6. That said, I was able to type on the 6 Plus. At least I have until December to make up my mind.
They're both AMAZING phones! I'm currently leaning toward the smaller one since I already have an iPad and use it as my main productivity device. Still, that big (and I mean big) screen is schweet!