Made this for dinner tonight - yum! I rolled my chicken with some bacon and goat's cheese (although I realised afterwards that I probably didn't need any more cheese) and served it with sweet potato and green beans.
My sauce ended up being a lot thicker than some of the other photo's of seen. I don't trust my scales 100% at the moment, although my MC is showing up at about the correct weight (25-30g), so I probably put in too much flour. I've got leftovers so I'll add a bit more stock to it when I warm it up next time.