Let's split hairs.... because this is APC

Read the wording under FOM 7.2.5 under Required Flight Crew Equipment

So use your own non-TSO headset and make sure a TSO'd headset is available and accessible that you supplied and maintained.

By that wording, I don't see where it states shall use or wear/don a TSO'd headset...

And it states his... so our female pilots are exempt?

I mean. It also states we need to carry the spare battery around. But it doesn't say it needs to be charged to any level!