While I love black and white in interior and graphic design, I am about as interested in creating black and white images as I am in watching black and white movies. I view black and white photography as a last resort for not being able to find good color. If a scene does not lend itself to a color photo, I usually move on, looking for one that does.
I need to emphasize the "I view" part of that sentence. I am only referencing my personal interest level in black and white photography. Everyone has their own photographic interests and if B&W photography is your thing, I say "Go for it!" If everyone was exactly like me, this would be a boring world.
Photography has very few "laws" and my black and white aversion is not one of them. One exception I make to my no-monochromatic rule is when a found scene is monochromatic and winter landscapes often qualify as that. For example and as illustrated in this image, a blanket of snow over a hardwood forest under a cloudy sky is a common monochromatic winter scene. You are looking at a full color image and in this case, I'm into black and white.
When shooting a monochromatic scene, there are two colors to work with. Thus, contrast, lines and focus take on an elevated importance in composition. With the entire scene in sharp focus, my eye is drawn directly to the area of strongest contrast which in this case is the cluster of front-most tree trunks. The balance of these trees aid in leading the viewer's eyes to this location or to the similar trunks diminishing in size in the background.
Trees laden with snow pull the image toward the white side of black and white and capturing such requires a sense of urgency as often the snow does not remain on tree branches for long. A light wind clears the branches as does some direct sunlight warming the branches enough to cause the snow to become slippery, inducing its fall. Sometimes the best time to photograph a snowstorm is while it is happening and the falling snow also pulls the image even further toward white. Protection for your camera during the snow storm can be as simple as the umbrella used for this image capture.
Summary: Use this winter to increase the depth of your black and white (or monochromatic) portfolio.