Hello darkergreen,
There are no unique properties that make 'Scotts locked Bowline' any better (or worse) as an end-of-line fixed eye knot.
I need to revise the content/text in the Bowlines analysis document to reflect this fact.
However, an argument could be advanced that 'Scotts locked Bowline' is the simplest structure to tie and learn.
There are in fact 4 different variations of 'Scotts locked Bowline' (within a particular chirality - eg, Z).
So there are 4 different versions with Z chirality.
And there are 4 different versions with S chirality.