Ah, okay that's good to hear (no pun intended).
Yeah, the Global EQ can be used that way. And it's even handier at times, because you can adjust things easier, according to the tone of the room.
This is my way with FR, don't know if it would work for you:
I take good care of the highs, waching out for the Fletcher-Munson thing and all. I'm using Ownhammer IRs. Basically I don't use the Bright switch if it's not enabled by default in the amp sim (couple of exceptions: Euro Blue and Euro Red). I often just dont like the frequency added by the Bright switch (when it's not On by default).
Instead I keep Treble almost always at 5, and use Presence to dial in brightness if things are too dark (at gig levels!!).
If the Bright is on by default, I almost never turn up Presence. I even turn down Presence below 12 o'clock (< 5) with some amps that have Bright enabled, such as Topboost, and a couple of Rectos.
This - maybe strange - personal rule works for me when setting up presets for playing live.
For recording things are different.=, and the patches need to be brighter.
You could be right there Yek about too many highs in the tone. I've recently redrawn my most used patches because I found them too dull. I was using PEQ blocks on every patch blocking everything above around 6K, but lately I removed the PEQ block and instead I'm using the Global EQ with some high and low end roll-off. Maybe I need to go a bit further.
Nothing wrong with my hearing per se, only my capacity to hear myself over my bandmates without destroying my hearing into the bargain. I've tried using ear-defenders but they make things worse as I then need to crank my monitor even louder. :/