this is the method that I used:
1. install udiskie
sudo pacman -Syu udiskie
2. add udiskie to autorun
<varies by choice of desktop>
3. create a symlink to /run/media/yourUsername as a quick shortcut in your home folder to any inserted sdcards
ln -s /run/media/yourUsername $HOME/sdcard
et voila! no matter what sd card you insert, and no matter what updates you perform, it will still mount your sdcards to the sdcards folder in your home folder.
1. install udiskie
sudo pacman -Syu udiskie
2. add udiskie to autorun
<varies by choice of desktop>
3. create a symlink to /run/media/yourUsername as a quick shortcut in your home folder to any inserted sdcards
ln -s /run/media/yourUsername $HOME/sdcard
et voila! no matter what sd card you insert, and no matter what updates you perform, it will still mount your sdcards to the sdcards folder in your home folder.