I was in a cycling crash earlier this year while wearing a new (2 week old) MIPS helmet. The helmet (with my head in it) hit the road pretty hard causing an indentation and deep scratches. The location of the indentation leads me to believe that the initial impact 'stuck' to the asphalt then slid as the coefficient of friction was quickly surpassed. I had absolutely no injuries to my head or neck (with that could be said about my elbow, which I apparently landed on full-force). I have since replaced that helmet with another MIPs one, but I haven't heard of the Wavecell helmets until now. I'll have to consider those the next time I'm shopping around for a new helmet, hopefully this time it'll be after the current one has 'expired' naturally.