As an Asian, I think it really depends on the country. In some countries, like mine, that would be the last thing in anyone’s mind because of the strict rule of not touching a stranger. People are curious, sure, but something like that is just too unacceptable for someone you have just talked to for 30 minutes.
But if you are talking about Asians’ curiosity of Westerners’ appearance it general, then we are no different than your average American when it comes to other culture. Westerners and Asians are just too different. In our eyes, you are so large, your skin is so fale or so dark, your hair and eyes come in so many colors, and you age so fast sorry, I’m not trying to be racist. A foreigner walking around can attract some curious eyes one way or another. A little confession: I used to thrive in telling jokes with my friends about tourists’ appearance back when I was a stupid little shit whose world only consisted of home, school and sleep.