Forever, the only things that weren't cross compatible between the SXK and the authentic were the key threads and the body screw threads. NO idea why. Made no sense to me. Well, the JMK hybrid tips worked in both.Forget who told me here that they didn’t work.
The SXK Mission tip was my first choice when I got the BB...
Still would like to get them, but would be a shame if they didn’t work.
it would be cool if the keys were now compatible, but then begs the question even more of why not all along?