Sides.
Because mostly I play blitz and it's much easier to grab them side ways and saves a lot of time.
Also I like sides, because when they are faced in front, they are giving their back of the head which is dangerous, just like in boxing 😉. It's to vulnerable. Side ways they are looking both ways and controlling g situation much better, so no one can "jump" them , they are ready if anything goes down.
So I notice a few people play OTB with their knights facing sideways.
It does kind of make them easier to recognise in profile but to me this looks wrong wrong wrong.
Knights should forwards and looking into the whites of the enemy's knights eyes.
What way do you face your knights?