There isn't a command line argument for pointing to a .fim/ located elsewhere, if that's what you mean. It probably wouldn't be hard to add that to the utility.

What you could do is put your photos subdirectory inside another directory, something like below.

    data/
    ├── .fim
    │   ├── settings.json
    │   └── states
    │       └── state_1.json.gz
    ├── photos
    └── records