It fills me with horror that 5 people (now 6!) in such a short list prefer to have the knights facing forward.
Facing left or right, even diagonal; that's all fine with me...but straight ahead?

Thats just wrong. Yuck!
I used to have them face each other; until I started to play the mainline King's Indian as White.
I found myself wondering (actually
during games, mind you) if that knight on b5 had come from g1 or b1 originally.
"Well...it's facing left, so it must be from the kingside. Oh wait, they're both facing left now. hmm...maybe I rotated it when I captured on d4. No wait, that knight came from c3 and captured when he played that stupid ...b5 sacrifice. No, that knight already moved back....right?"
Basically I needed any excuse to avoid calculating ...f5 yet
again.
Anyway, I decided I didn't care which way they were facing anymore and resolved to never waste clock time on such silliness again.
But then I read that Tony Miles was watching some players analyze their game in a post-mordem when he simply leaned over the board, adjusted one of the guy's knights and said something like "this knight needs to be facing left. Otherwise, that combination won't work."
That got a little laugh out of the players and it made me decide to always face my knights to the left as a strange tribute to Tony.
Cheers,
Nietzsche
ps - I haven't gone so far as to play 1...a6, but a
little tribute is good enough right?