Mostly I avoid both mittens and gloves. I prefer wearing my favorite hoodie that's a bit big for me so I pull the sleeves down over my hands and kind of grasp the cuffs in such a way that my fingers are tucked in cozy warm together. I even do this when I wear a coat over the hoodie. I should ask my friend to photograph me doing this. I just realized I've never documented it. Of course, it would be difficult to photograph both of my own hands!
Now, I do have some gloves I store in my coat pocket. They're cheap black knit gloves (probably from Target, but I forget because I bought them several years ago) and they have colorful sequins sewn into them in the shape of peace symbols. Very rarely, I will choose to wear them instead of tucking my hands in my sleeves.
I also own a pair of mittens. They were a gift from my Swedish sister-in-law, so they're nice to have. Mittens are awesome if you're not going to do anything with your hands, but very impractical usually, I find.