Wearing Kippot II

This weeks Tuesday morning Chavruta on Wednesday was even more interesting then last week. (yes, this time the Tuesday morning learning did happen on Wednesday). Heres the highlights:
-The first time a kippa is mentioned in terms of halacha is by R Yosef Karo in the Shulchan Aruch. The Rama, who we follow, says he didnt mean it as halacha, its just a middot chassidut.
-One of the Rishonim (Maharam, maharshal..) was very angry at some of the people in his town, that would look down on whomever didnt wear a kippa as being less then them, even though they themselves werent makpid on important things like kosher. (amazing how little we've changed as a people in 500 years!)
-The Vilna Gaon said kippot arent important and are only needed for davening and learning. His own students didnt follow him though, and wore them all day.
-The reason behind the concept of two head coverings, i.e. the black hat on top of the kippa, is because people would take off their hat as a sign of respect, and they didnt know what to do when they were in shul so they would wear two coverings. (Editors Note-nowadays, kinda pointless)

I think thats its for the main points. So, as of now, the only time we need to wear a kippa is when learning or davening. Shabbat Shalom