From my observations during this life, only if they keep their home on wheels does it have bearing on the type of person they are.
I've known absolute slobs who were neat as a pin at work and in public. Kind and caring people who's homes were a wreck.
Yet I've known people who live in trailers who's homes were neat and clean that were just the opposite. And they're attitudes needed a huge adjustment also.
Not all trailer beings were like that tho.
I think it can give you some insight into them as people. But it's only a small part of a larger puzzle.