I love them. I got them for winter hiking, but they are very useful outside of that, as you indicated for your barn application. They are available at a lot of outdoor recreation stores, sports stores, and here they are available at Les Schwab Tires, a regional tire store. Also online.
I just got back from shoveling the sidewalk, hauling the garbage can to the street, and inspecting the pickup. It's iced in and has a three-foot berm of snow in front of it. It ain't goin' nowhere for several days.