Amper compossites amspand es72a

Hello ,does anyone has experience with this product ?http://www.ambercomposites.com/amspand-es72a-2
It like the fact that it expands while curing so it can apply possitive pressure to the mandrel from the inside…also the fact that i can make a shaped form of foam layer with the apropriate mandrel sounds promising.

I use it often as expandable adesive on honeycomb edges and wings trailing edges as pressure intensifier.
It works well, but it is insanely expensive to be used as a foam mandrel.