The Walking Company, a mecca for stylish active footwear, has walked away from its longtime home at Westfield Montgomery mall. This is the third shoe store to exit the mall’s Nordstrom wing since March: Steve Madden went dark at the beginning of the pandemic, and Marmi disappeared last fall. In a corridor that was home to five shoe stores pre-pandemic, Stuart Weitzman and Aldo now stand alone. Is everyone buying their shoes online these days?