When wheeling, it is very handy to have the mirror fold flatter than in the first pic, I've tilted a couple times next to a tree where no part of the door would touch except for the mirror mount.

I had the second style on my truck, took them off for wheeling.

85 4Runner on 36's, Almost there!!!
85 4Runner on 35's, Build also in progress
89 4Runner on 31's, IFS still intact