Looks pretty and definitely convenience for cable management. But I am concerned that the GPU's will be very close and the case will greatly restrict airflow. I would be worried that the heat build-up could cause problems and force the GPU's to run at slower speeds.

I just built my first 10 GPU mining rig https://steemit.com/life/@mrosenquist/cryptocurrency-mining-rig-1-built-and-reporting-for-duty and although it is not pretty, it stays very cool thus allowing me to push the cards a bit further.