Not so sure how a stock image is affected. At worst case you will still get the update notification but the install will fail. As long as you have the latest build on your phone then you wont get any notification so you could easily flash the latest CWM Stock image as it is made available.
You just cant hurt this monster
Mark.
I guess inversely if I only want to receive OTA updates, do I simply unroot and relock as I have the stock Google Rom now?
Also, is there a way to remove CWM if there are warranty issues and need to revert to being bone stock?