Lip Pin...never heard that one before...but it works...
I have shot and used a kisser button for over 40 years...
Properly used one of the most solid anchors or anchor point you can find..
Simple yet they have been improved greatly...even up to just a couple years ago many kisser buttons were not very comfortable to shoot...
If wanting to try one I highly suggest the Komfort Kiss...as described the most and consistant kisser button I have ever used..plus the most solid and secure
http://www.komfortkiss.com/
The Kisser Button allows me NOT to have to use a Peep so no extra weight is on string...plus I dont have issues with the peeps...
9 out of 10 shooters will install kisser [on center] 1.5 inches dead on from nock point..[under top nock of loop]
This puts/anchors a shooter exactally placed where bow was designed to shoot on full draw with proper draw...
Neil