Will the top of a slide-out handle a persons weight?

I understand that forums are full of more opinions than they are helpful answers but thats because they're forums. Getting answers directly from the manufactures can prove difficult and sometimes the quality of the response can be worse than a forum. Experience has to be worth something.....

That said, I do have a another question which I guess would go along with my original question..... If slides aren't designed to support any weight then what about camping in the snow? :h