I tried experimenting with these 6 years ago on my AD Trad Lites. Worked well, but I had to sand them down significantly to fit the small inside diameter of the shafts.
I enjoyed trying them, but had a problem that made me stop considering them. The plastic of the nock seemed "soft", and from just resting on my lap in the bow quiver, the nock "bent" out of line from the weight of the bow and was no longer aligned with the shaft. Looked a bit like "the arrow designed to shoot around the corner"!
It was possible to hand straighten them back into line, but away on an elk hunt I couldn't take a chance the they weren't shooting to normal point of impact. I pulled them off and reinstalled my Easton G Nocks.
With all you guys using them recently, has anyone noticed a similar problem? I would love to try them again, but need to be sure they are solid and trustworthy. I assume my difficulty was from early manufacture or a questionable lot of plastic.
All the good comments here made me curious once again...