Seacast Question

[willy]

Do any of you fellows know of boats being restored using seacast in the stringers?
I have a good reason for asking I will explain later but right now I need to figure out whether this is a good thing, a great thing or possible problem.
It involves a restored boat done by a pro mariner and the bulkheads were done in encapsulated marine plywood but the stringers were done using seacast. I was told that it is extremely strong and waterproof, stronger than the wood.
Research on the web seems to be divided between older mariners who view it as the second coming of Satan and others who use it regulary and say it has been amazing. Got to be some common ground I would think.