I'm a first time user. Liked the idea since I first saw them years ago but only recently tried them. This is an initial feeling. I have yet to see how they hold up and how long they will last. Right out of the box, I didn't know if they would fit. Once you get all your toes in, the heel slips on nicely. I understand the narrow comments and initially thought the same. But after 1 day, they start to mold to your feet, so to speak. I usually wear a EE width or bigger if I can get. If these were that wide, I don't think they'd have the same feel though. They want to hug your foot so they don't slop around. I had none of the discomfort spoken of switching over. No need to work up to wearing full time. My feet wanted to keep them on. I'm a sock wearer and going sockless is more odd than the shoe. My hope is they don't get the typical shoe stink going on. If I had one thing I would want different, it would be the toe are. The toes are very long and my little Stubbs don't fill the 3 little toes but halfway. Big toe and next fit great. The sole feels durable yet gummy and still provides plenty of feedback from ground. I love the tread as it reminds me of my motorcycle tires. Driving in them is wonderful. Can feel the peddles and feedback is enhanced. My feet finally feel barefoot and fancy free! I'll be back in 6-12 months to see how they lasted. My next pair will be the KSO. I think the strap setup will be a better system than the laces on these.