Okay, I've to do it by myself.
We have a application with a lot of tables.
A lot of the display logic we are doing with odata.
OData is a little bit magic in our opinion, its not so tangible. Sometimes so easy that we want believe it. 
We have a lot of requirements where we're not sure, how to do it with odata at this moment.
This is why we try to find out what else we can do with xsjs.
With release SPS12 we want to move to xs advanced and we thought it would be better to use more native javascript, so we can cut and past a lot of things. (so we can use the real node.js power)
If you think different, let me know!
BR
Dirk