This. Along with Prince of Percia 1 Prince of Persia 2 Flash Back Fade to Black Decent 1 , 2 , 3 Hexen Heretic 1, 2 Golden Axe kid chameleon man there are soo many I've played through out my childhood and uptil now that I cant remember. =\
Yeah there's some advantages of using 2 materials on one object, but that does count as 2 draw calls. But if one material is instruction expensive, that is perferable to seperate them. You can also have 2 textures set up on one material, it just depends on what you are trying to do exactly.
Don't forget you can access your brushes by making shortcuts to the 1, 2, 3...9 keys 1) press "b" 2) Ctrl+alt + left mouse click a brush and press "1, 2, 3 up to 9 " to store your brush 3) save config regularly.
Awesome! Really happy to hear. Unfortunatly this is just a bandaid and you might actually experience triggers for hotkeys "1" & "2" quite regularly when working with my plugin. In other cases this should not cause too much issues with your setup. But I'd advise not to bind "Delete All" to either "1" or "2" :P