@pie Well it is somewhat focused on hiking but not entierly.
For example sandals are class A, and class A2 is more durable than class A1. I'd consider sandals day-to-day shoes. But yea the classes are hiking oriented in the sense of "how well does the shoe hold up to rugged terrain", but I'd say to some extent that would carry over to every day shoes. with that said I think shoes that you'd never use hiking (like a true g-string style sandal) wont have a rating and its more outdoors sandals youll see getting the rating.
Me personally I only were these style of shoes cause in my mind hiking isnt really that different from day to day wear. A class for my sandals and light shoes, B for my every day shoes, C for my high quality hiking boots.. I have D class too but rarely wear them unless im doing actual hiking on rocky terrain, and its overkill for that most of the time really.
i mean day to day shoes for wearing every day in the city, it seems like either you can buy cheap shoes that last a year then fall apart, or expensive shoes that probably last a year then fall apart but might not, and in that $100-200 range theres like no way to look for durability because enough people treat them as disposable that noe thats where the whole market aims for in quality