Quote Originally Posted by TominMN View Post
Look at those "tails" on the asym. I'm thinking that is the answer to be able to use the same zipper half. But that also indicates that the asym "bulges" are set in a bit further from the ends as compared to the symmetrical one. It also means that the "ridgeline length" is longer and the asym will be looser on the SRL, assuming the "bulges" are the same width.

Am I "reading" that correctly?
Lol I really don't know... they don't *appear* to be interchangeable. There must be elves involved.