I've read this kind of thing a few times but much to my surprise my experience has been quite different. I fitted one end of my arf bracelet to my noob and it fitted in the same way. I only tried one end, just to test it though. Either way it the SEL fitment was quite good. Also I can't see any difference between either bracelet, which is why I didn't actually fully fit the arf to the noob. The clasp codes are different though.
Very interesting!
I'm waiting to get the noob. Will try it then