Well, I made it to the AT&T store today to check out the Pelican cases. I didn't care for the grip on the back at all. Around the edge is that rubbery material which did provide a nice grippy surface, but unfortunately the plastic that covers the majority of the case doesn't provide a very good grip.
I also stopped by Best Buy to check out their cases, and saw a Symmetry for an older phone model. The plastic on that thing was even less grippy than the plastic on the Pelican case.
Yesterday I saw that Incipio released a bunch of different colors for the 6+ in their DualPro line-up...so I ended up coming back home and ordering one of those in the dark blue/dark gray combo. My wife has been happy with hers (she got the Verizon blue model DualPro) so I figured I could get myself one and that way I can get rid of this Spigen case that I just don't like.
I guess we'll just wait and see if Speck releases any decent looking Candyshell cases for the 6+. I just can't believe that they think those hideous Candyshell Ink cases are actually going to sell. Huge fail right there.