Hi, thought I ought to come and report back since there are some new posts. So I had already had the 17 cuff, and was wanting to add a regular JUC. My SA had recommended 1 size down from the start, but I got nervous reading about 2 sizes down on here. I brought it up with her and she said honestly it’s just a matter of personal choice and you need to try both on, but in her experience 1 size apart was more often the right fit. I went and tried both on and she was right, so I ended up with the 16 JUC.
No regrets - I love them together, and don’t have issues with them getting tangled. Once in a blue moon but they quickly unshake. I wear the JUC closer to hand with the nail part on the hand side - that was a tip from my SA as she said the nail part can catch on the cuff, at least in her personal experience (she wears both together as well).