WOW! Big words for a hot stank. First of all it is a commonly known fact that lexan is used in water blocks for its aesthetic qualities rather than improving real world performance. Secondly, I think that my post in response to newbie water cooler regarding his spiral block was constructive critisism as I suggested ideas to increase the turbulence of water entering the block.
As for reviews, a review of the OCWC Copper/Silver PolyBlock for instance (a water block of similar construction to this proposed spiral block) can be found at either
www.dansdata.com or
www.procooling.com , the procooling article compares the ‘open chamber’ design of the polyblock, to the MAZE2, a machined channel block made entirely out of copper.
Hope this helps.