Dont get me wrong Kevin, the stuff is not bad, its just not going to cool the engine as well as water/glycol. The crux of my comments is that the guy you were talking to is misrepresenting the product. If you think buying it will fix an overheating issue, it will not.
The comment that was most laughable was:
The vendor explains that the reason the temperature gauge may read higher after installing the coolant is because the coolant is more efficient at removing the heat from the block, and therefore that's why the gauge reads higher.
As if the alleged superior heat transfer wouldn't also pertain to the radiators ability to transfer that same heat to the air.
Indeed.
One could also run pure anti-freeze, provided they were willing to keep an eye on the temperature gauge during spirited driving.