Of course it won't look nice when you are in the public. I don't do that in the public but does it at home. I had both legs on the chair when I'm surfing the net and when I'm watching television on my sofa.
I think I know what you are referring to. I don't do that in public.
While I am at home, watching tv, reading, eating, sitting in front of my laptop, or whatever I am doing, I will sit in my most comfortable position.