Correct, you can't view h-scenes on the .com side. Because when you try to view one, you get a prompt asking if you'd like to reload the game on the .net side.
If you intend to view an h-scene that session, then yes, play the game on the .net side. If you aren't going to view an h-scene that session, then play on the .com side. People can't be so recklessly impulsive to the point that they make their decision to view h-scenes in the middle of their play session, right?