A warning about Evans Waterless Coolants

At first glance the Evans products look pretty nice although somewhat expensive for coolant, but a real high boiling temp and no pressure in the cooling system from expansion like other coolants sounded pretty tempting.
BUT, after looking into it farther and some online research I found 2 major issue's with it.

NUMBER ONE, is that the chemicals in the Evans products sticks to and builds up on aluminum parts and this wouldn't be too big of a deal unless you have aluminum heads.
If used with aluminum heads that buildup on the surfaces causes the heat transfer from the head to the coolant to drop dramatically over time causing hot spots that make steam bubbles in the engine and therefore can cause crystallization of the aluminum. (Not good)

NUMBER TWO, is that with Evans coolant "iron and aluminum" cylinder head temperatures are higher by about 140 degrees.
This means one of the reasons people use aluminum heads (for lower octane usage without preignition) is pointless, as when the head temps get higher preignition becomes a problem even with aluminum heads.
I saw a 4-5 point increase in required octane rating simply because of the two traits of the Evans coolants.
One increase is immediate from higher head temps, and the other is a buildup over time but both eventually requiring higher octane fuel.

Anyone else seen this out there?
If for sure it's actually true, that's not good.