BRuys
As someone who records multi-track drums, the Pro Channel Expander/Gate module is a great convenience..
..I will often actually keep the module in expander mode for more transparent control, so the open mics are attenuated rather than gated when not directly hit..
I am the same, BRuys. I will also use it on guitar (particularly single coils) before the amp sim (if not a miked amp), and
leave it in expander mode. I can't remember when I last used it in gate mode.
It is so convenient. I have it first in various track templates, turned off. If it is needed it takes no time to set it up.
Transparent (when in expander mode) and
convenient are the two words that sum it up for me, when used like this.