Although what I know about furled leaders is close to what I know about mathematical manifolds, tippet rings obviously are great for ease of connecting whatever ...............such as tippet material. As far as using jewelry chains etc, in order to use them, one must CUT each link to remove it from the continuous chain thus compromising it's mechanical integrity. The tippet rings that are on MY few furled leaders are continuous circles/rings with no chance of an opening or separation failure. Need, cost, worth, value, utility.
Mark
Having said that, I'd rather be and am now in Wyoming.