Hi, this is my first post. I've been lurking for a couple of weeks for help on deciding what RM to get. Since I've had a Charcoal MAM for a week, I thought I could answer your questions, and I can post some pictures later today when I have time.
First, I love the Charcoal color. Too me, it's a perfect fall/winter color. I would say that the actual grey is closer to the Revolve images, the Aster Alice ones are too bluish looking on my monitor. Charcoal is a dark grey with warm brown undertones, not cold blue undertones. The leather IS shiny, but a nice, interesting, eye-catching shiny, not over-the-top shiny. (Same look and texture of the Raspberry leather if you've seen that in person). The leather has some body to it, yet it's soft and pliable - although not nearly as soft and pliable as the Black MAB (not glazed or distressed, pebbled leather I think) that I also have in my posession right now. Hope that helps, I'll try to take pictures later. I'll take picttures of the Charcoal next to the Black for reference.