Originally on the Appalachian Trail I carried clone Crocs from Walmart—the ones lighter than the originals.
I walked up to 9–10 miles a day In them, though I usually only wore them at night or for hostels and town stays. AT hostels often require you to take your shoes off.
I would not use them for a water crossing—not secure enough.
They wore out. I picked up some water sandals. I’ve carried them on and off. I used them for water crossings on the Pinhoti Trail.
I’ve also done water crossings in my shoes. Just take the socks off (better than leaving them on) and hike on through.
I picked up some replacement Croc-style camp shoes but they were heavy and my feet didn’t like them. They were left, looking sparkly new, in a hiker box.
Recently I’ve tried some flip flops. Almost eight ounces lighter. I’ve also tried doing without.
Finally I made some DIY camp shoes.
Stout enough to wear in a public shower.
Video on how to make camp shoes.
More details on making insole camp shoes
I’m obviously still thinking about it all. But dropping weight is a good thing.