Very happy with my Kelds. I bought a pair of Richmonds first a little while ago, then went with some Vivo similar look but black, and these two pairs are great for smart, but this was the last step to (practically) full conversion to barefoot. Being a 6'2" ish man (and not a skinny light stick insect) I've had back problems for a little while. Nothing serious, but just aching back every now and again. Since I started with barefoot shoes I've only had any back problems once, and that was the day I went back to regular shoes for a particularly smart occasion -I ended up not being able to driveI had such bad back pain. So now, I just accept that I might look a little clumpy in my barefoot shoes, because really, life without back ache is worth a few people thinking I like a bit clumpy.
Specifically, these Kelds are nice, they're the most barefoot of the shoes I've got so far, and I think my feet are still adapting to them, but I love how airy they feel. I bought them to replace both my trainers and my sandals, both of which weren't barefoot and were falling apart. I love them for both. I've cycled and walked in then and both are comfortable. I still have a pair a good quality non-barefoot walking boots for mountains, but I will wear these for anything less than that (and possibly even mountains in summer). Basically, anything that is not smart, I wear these. Plus, I kicked myself for not buying the elastic laces with them, but once I got them they're stretchy enough to leave the laces done up and just slip on and off anyway!