Use with wool socks
My main purpose for these is wading creeks/rivers for fishing with no waders, just shorts. I tried neoprene socks but they tended to let gravel in as they did not fill up the space between sock and top of the shoe. Gravel guards or short gaiters would probably work...however, I found a heavy wool sock to work well and prevents most gravel coming in.
I was wading granite Sierra streams and they performed very well on both wet and dry granite and are a pretty good shoe for hiking in....but a for super long hike ins, I used my regular hiking shoes.