The real advantage over toolz/get_in is in the breadth of types glom can support (http://glom.readthedocs.io/en/latest/api.html#setup-and-regi...), the extensive fallback behavior (http://glom.readthedocs.io/en/latest/api.html#advanced-speci...), and "T" specifier (https://sedimental.org/glom_restructured_data.html#true-pyth...), which allows performing object-oriented traversals and calls.
Check the post for more examples of where path-based access falls short of the mark!
(Sidenote: I find it very clunky that get_in() takes a "default" kwarg and _also_ a n"o_default" kwarg. Use a Sentinel object! http://boltons.readthedocs.io/en/latest/typeutils.html#bolto... )