A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
I don't know what type of test Kev Hacker performed, but unless you have customized your keyboard shortcuts Shift+Command+L is not assigned to Add or Remove Filters. It's built-in assignment is to New Cell Style.
There are 2 built-in keyboard shortcuts for Add or Remove Filters:
- Shift+Control+L and
- Shift+Command+F