In seriousness, following my sway thread, lol.
The point is, the more mentally prepared you can be for "probable" situations, the better you'll fair most of the time.
Like driving in inclement half winter weather.
I'm a regular user of the brake check when roads are wet, possibly icy. Or snow packed but maybe better, maybe worse traction.
Even easier when towing the sled trailer. Can just stab the trailer brakes and watch how it reacts in the rearview.
No need to grab the binders and drive 20mph when the first sno flake hits the window, but if you don't see spray off of other's tires, time to figure out how slickery it is before you find out the wrong way.
