I am doing this also. Have my IR(R) and currently doing my ATPL's. I have spoken to a few schools and some definitely seem more clued up about it than others.
Some are very into the CBIR but focused more on PPL/IR. Out of the commercial schools Wycombe seemed the most knowledgeable and enthused about it. They gave me a go in the excellent DA42 sim and spoken highly of this more flexible route.This was 6 months ago though so others may be catching on to it now.
Some schools I got the feeling that the CBIR students would be playing second fiddle to the full time full IR guys. Others told me info that I knew was just wrong.