Ok, OSX results. First AM shaders:
Basic CRT works fine.
Halation takes a good while to startup, but once it does it runs pretty smoothly! This is both when you switch to it and hit ESC to go back to the layout and on startup.
Lottes is completely black.
However, all three - when I first start AM are black. I have to switch to a different layout and then back to make it work. Not sure if that's an AM bug, but maybe?
MAME is up next, but I'm having a hell of a time getting it to load my roms for some reason..