In my experience dealing with code written by people who only know ORM:s is about as fun as dealing with code written by people who refuse to use ORM:s when they really should have. The latter like to prove they don't need an ORM by creating their own "simple" libraries full of half broken functionality that pretty soon turns into to the ORM:s from hell.

Oh, be aware that SQL is not universal. Especially not if you do anything remotely advanced like triggers, non-trivial indexes or select queries that returns complex types.