Pete,
I have done some brief experiments laminating one side of a foam panel and then bending it to the required shape. Once in that shape the other laminate can be applied.
However the required shape was only sufficient to build the Razor design I'm currently prototyping in ply. It is on my to do list to build a fully foam sandwich version to prove the point.
This bloat has curved sides but also it does have Chines. When seen in the flesh they are not that noticeable and will only be seen in the water when flying a hull. I did post some pics on the F16 forum.

One of the objectives of this design was to come up with something that could be built easily from ply or foam sandwich.
Bending a foam panel that has both sides already laminated would be quite different.