It's what we call a 'problem creation exercise'
The horn nock is there to protect the wood , it doesn't need 'owt else.
If you put a boot on it, do you then need a titanium boot protector? and blimey you don't want your expensive titanium getting dirty, maybe a vinyl cover for that?
Reminds of the old joke...
Irishman (other nationalities are also available for comedic purposes) goes to the doctor with athletes foot.
Doc' says, be sure to put on clean socks every day.
By the end of the week he couldn't get his boots on
Del