I didn't like it when my legs were locked in a tubular shape.
I didn't like my feet being encased in a tubular form that attached to my boots. I'm sure there are many people who find it convenient. I didn't, so I switched to NB880, which is better for my feet.
Pros
I use this shoe for daily running. Light weight and comfortable fit.
Cons
Shoes may not provide adequate support on slippery surfaces.