Aluminum over foam ???

Seems like a good idea ... We know it's difficult over wood (float required) But the question is , does foam and aluminum expand and contract in a similar compatible manner ... ??? Thinking about siding ... vinyl and aluminum siding expand and contract very much alike ... Although I've never seen any , some have reported panels like this available commercially , and the RV tech who befriended me even mentioned fabricating some TD s with this material combination ... 
