Every year I hear designer saying plaid is dead and especially the buffalo one. Well it always seem to reinvent itself and find is place. Especially in footwear where boots all took a new twist with upper made out of fabric. Red wing, Timberland and many more are softening their rugged boots and making them more classic and clean by adding fabric. This is simply following the more clean and dressy evolution of clothing. For some it does not apply to their brand identity but you don't want to loose the flow people are in, so maybe an inner lining or innersole made out of plaid fabric becomes the solution.