Steven,
It is very secure, and I am very comfortable with it. It is bomb proof.
Think about it - my first turn of thread traps a 'U' of the material, with the tag end facing back, with a second locking turn of thread jamming directly in front.
Minimum number of thread wraps, and maximum security. Secondary, very significant, advantage is that there is never any stub material facing towards the hook eye to cover up.
Where learned? - I noticed it from a tying friend, Hans de Groot, some four decades back and have never looked back.
Cheers,
Hans W