CWS is an excellent tool when using the Unreliable Airspeed checklist. Set the attitude and power and just monitor the performance instruments. Much easier than having to actually hand-fly the attitude. I know, I know, Skygods; before the inevitable bitchy remarks about how we should all be able to hand fly to within a gnat's
I'm saying it's just easier to let the plane take the strain, not that I can't hand fly and that CWS is a great way to do it.