It's not so much about moving away from unit tests are more to do with picking the best points at which to test your apps. For web apps the natural points at are the model level and at the client level. For the Django apps I write these tend to be the most stable areas since they are likely to be heavily influenced by user requirements. The result is tests that have a long lifetime and provide better system documentation since they generally exercise the business logic of an app. That neatly avoids one of the major problems I have found with TDD that unless you know in advance exactly what you are doing and going to do you will end up writing a lot of tests that get junked.
"I have found with TDD that unless you know in advance exactly what you are doing and going to do you will end up writing a lot of tests that get junked".
If you know all that up front, you might as well go with waterfall methodology.
