So I've gotten to wear these out more and I would rate them an 8/10! I was out being a tourist all day - literally spending hours walking around in the freezing 10-20 degrees Fahrenheit. These were not good enough for then. They did okay, but after an hour or two of being out in the cold my hands became cold as well.
Now that I'm back in my own city, doing a normal amount of outside walking around/commuting in only 30 degree weather, these hold up great! My hands have managed to stay warm. The leather does a wonderful job of blocking the wind; I can't even feel the wind when it's blowing super hard.
I can't help thinking they would've been warmer with shearling, cashmere, or alpaca lining. I think these are best suited to 30 degrees Fahrenheit and up. They are very durable and beautiful though, and the leather is absolutely buttery and velvety to touch.