I bought these back in February. I wore them down the woods, which is hilly, muddy when wet and a variety of uneven pathways.
I did this to get them worn in before a long hike. I found the tongue a bit thick to start with, but the comfort just improved each time. Very grippy. I could walk up a steep, muddy and wet hill, without slipping, just walked up.
Then I worse them on a ten mile hike along a coastal route. Climbed up cliffs, walked on sand, climbed over boulders on the sand and then on the trail with mixed dry mud and stones. They took a battering that day and held up so well.
By the end of the walk (my first time wearing barefoot walking boots) I had no discomfort, no rubbing, they just got more and more comfortable with wear; the thicker tongue, seemed to soften. As I have wide feet, I can lace them wider and this makes a difference.
I have since walked part of the Great glen Way, with a walking group. I have done other long walks and they certainly have been through a mixed terrain. In water, which was unavoidable, yet dry feet. They hold up well and have become more comfortable. I can honestly say, these are the most comfortable and best walking boots I have ever had, but then I have never had barefoot walking boots before.
I also really like the soft thick leather ankles on these. They do not restrict my ankle in anyway and they are not too high, just perfect for my likes. I would certainly look at getting another pair of these in the future.