Even though I got a size too big (sizing is a little confusing), I really like these shoes. They are total barefoot style, with just a little pressure around the top of the foot where the laces are. They're cute and very flexible. My toes are totally free to spread out as I walk, the bottom of the shoe is completely flat and there's plenty of width, I usually slip them on and off without untying them. They sort of have the feel of water shoes, you know the kind you can buy for $10 at RiteAid, but are obviously of way higher quality.
For wet weather, they were waterproof at first but I guess the stuff has worn off or something. The backs are very low also so water gets in through the heel and through the laces. They keep your feet dry and warm, unless you're walking in heavy rain or deep puddles.
My only complaint is that the inner lining slipped around and eventually became bunched up at the front of the shoe, so I just took it out. Now the shoe is less insulating, but basically feels the same. I can feel how cold the ground is without the lining, so actually it adds to the "barefoot" feel :)
The laces have a hard time staying tied, so you'd have to double tie them.
Also, the traction is not that great. I often slip on wet metal, ice, mud, etc. So, good for dry trails but not wet/muddy, icy/snowy ones.