It’s certainly an about-face from the trends in American microbrewing, where (generally) bigger is thought to be better. There aren’t many Milds available these days, so this is definitely a treat. (As is "trick or treat." Har.)
Smell: Roasty, with a touch of sour and nice dark fruity character. Some nutty brown notes, too.
Taste: Dry, with roasted malt notes—a touch of burnt wood and smoke—but not unpleasantly so. A Schwarzbier-ish character but not thick or heavy like a stout or porter. Definitely "black."
Mouthfeel: Light-bodied and clean and dry, with a mellow, flavorful roasty aftertaste.
Overall: Very nice for such a lighter, low-strength beer. (Is this my first real Mild?) Well done.