This is not only a good looking trick, it also serves a purpose in keeping your string clean on the dismount.
With each rotation of a regular Tangler you are twisting the string a little bit more. Each outside tangler undoes one twist in the string. It’s a little more difficult than a regular tangler, but it also looks better and benefits you if you’re doing more than a few rotations.
Trick to know before Inside / Outside Tangler: