from the guides:

>Hanami components are decoupled each other. This level of separation allows you to use the ORM (data layer) of your choice. [0]

So indeed, one could use a preferred ORM. Yes the ORM looks a bit verbose and the part with the relations being experimental is a show stopper.

Ignoring all that, Hanami is quite nice architecturally speaking [1] it could evolve into the Phoenix of the Ruby ecosystem.

[0] - http://hanamirb.org/guides/models/use-your-own-orm

[1] - https://github.com/hanami/hanami