Quoted:
What shoes work best for you when you spend 10+ hours a day on concrete walking.
You need to be fitted.
Determine your needs for drop and support.
You might be natural, or a pronator, you might prefer 8mm or 14mm drop, more cushioning or less... and so on.
Shoes are a complicated fuckin' thing man.
I just found all this shit out recently.
It comes down, ultimately, to what feels good. But feeling good for ten mins in a store is different from 10+ hours.
That's where the mechanics come into play. If your shoe is all cocked wrong you'll snap all your shit up.
If you need support and don't have it, then 10+ hours daily will become hell in short order.
Go to a running specialty store, they typically have walking shoes also.
They have shoes designed for walking on pavement.