I think that’s an interesting way to look at it. Inhun is two faced, as you said, which makes him a lot worse than Seungho in my head. I’d rather an enemy stab me in the front, than an ally stab me in the back. Seungho is considerably more of a horrible person but he doesn’t hide it behind a smiling facade. For the pure fact that Inhun is two faced, he’s worse for me.
If put it like that, it makes him sound like the lesser evil of the two. But to me he's so manipulative. So far all we got from Inhun is how he is with Nakyum. We don't know much about him yet. Also, I think it boils down to me really despising abusive people. They may not take lives but they kill a person psychologically. And still none the better.
I beg to differ on that who is worse between Inhun vs Seungho. I feel like they're both the same. Inhun isn't found behind bars cos he's a two faced ass. While Seungho isn't shy of being evil. So who's the worse one? No one ups the other. Both are insipid snakes for me.
Until the author plots a good character development for either. I will stick to Nakyum leaving everyone in the end. I just enjoy the drama of everything.