This is a very good shoe. The traction pattern on the bottom gives a great platform for quick movement and the small triangle that pertrudes from the outsole extends the base without being intrusive on the ground and allows for even greater traction on the ground.
The strap on the ankle of the shoe holds the laces down and acts as a pulley for the zipper that runs down the side. The zipper itself does a good job of making the shoe easy to get on and off.
The Flywire technology does a good job of locking down the shoe for support and makes the shoe feel like it is part of your actual foot.
However, the shoe is a tight fit across the top and this can be uncomfortable. This could be to decrease the loss of energy with each step, and it does get slightly more comfortable over time, but it does not leave a great deal of comfort to be had in the beginning.
Overall, this is a very good shoe, solid performance and great traction but it could be slightly uncomfortable to the wearer, if only to begin with.