I have one word SUSHI !!!
I am interested in this system, but I much prefer the Koolance EXOS. It think it is a much cleaner piece to install and maintain.
I also have second thoughts about that silicone tubing. I would prefer it for it's pliability and ability to keep a good seal around the waterblock. Then again as it warms up and becomes too pliable it could burst from the pressure. Always Pros and Cons.
If any off you manufacturers are listening, I want an external based unit with a slot plate. All connections should be threaded fittings and I want reinforced silicone tubing. Now go and make it. I will make your stocks fly!
hehehehehe