I don't carry spares because that just means that I will lose two of something rather than just one of something.
You just described me!
I have pretty much given up on gloves... I just cannot imagine a bird seeing my hands and running for the hills...
I do feel a face mask is important, as our heads move and bob around, and the oils shine of the skin of a face are the first thing I can pick out on duck hunters...
I do hate wearing a face mask though... Tough with glasses, and just a general pain. That being said, I do carry an extra in the vest.