The problem with sqla is that you need to deal with the session object all the time. Doing it right is not that easy, and never as concise.
SQLA is cleaner and more powerful, but when you just need CRUD, django wins.
SQLA is cleaner and more powerful, but when you just need CRUD, django wins.
Dealing with the session object seems a small price to pay for the flexibility in architecture that it gets you.