Which decent casual SPD shoes? Dzr, Chrome, Quoc Pham, etc

That doesn't bother me, what I'm saying is why make a 'casual' cycling shoe that looks just as ugly and/or unfashionable as a regular cycling shoe while not as functional?

Walking is no trouble in decent MTB shoes and I'm sure most people either overlook them or take them for football boots.

I can walk in my chromes all day, whereas anything more than a couple of hours in my MTB ones and I feel like throwing petrol on my feet and setting them alight. I'm riding in the city, personally I see no reason to wear specialized shoes or carry regular ones. They don't look half bad, especially their new ones. How much walking can you do in MTB ones before your spine turns into a slinky?