Toggle Material is used to toggle material in viewport just by using 1 click.
It will show selected object material or toggle all scene material if there is no selection.
How to use:
- Run the script
- Select Object/s or Nothing
- Toggle Switch
Installation: Drop The file in max viewport and go to Customize > Customize User Interface > Toolbars > Category: .timo > .timo Toggle Material
Tested on 3ds Max 2015