brado23/jquery-ui — comment on commit c82ab8cd85adfb67ae8fb80fd8b86a49bfbcb240
File: grid-editing/master-detail.html line 42
By brado23:

As we discussed, I'm not sure what you gain by conflating $.observer and $.observable.
In the scenarios I've played with, $.observer is for reading the model. $.observable is for making edits. And it's common that these are distinct parts of your app.
Worth keeping this idea on the stack. Might be worth holding off on it until we can judge $.observer in its purer form?