LOVE IT!
super easy to assemble, much more comfortable that you might expect and they look fantastic. they really bring a lot together. This was my first online, sight-unseen furniture purchase and it has been a great experience. 
I was concerned about the slimmer profile that other reviewers had mentioned, but we find these chairs very comfortable, not restrictive at all, and I love that I can comfortably fit more of them at my island. In fact, we're ordering another today!
The gray is a nice warm-ish mid-tone. The leather does show shiny "grease" spots from any oil or even hand lotion. It is not very noticeable and seems to blend in or fade away over time.