Stuff like Caladan Brood, Dissection, Opeth, Vintersorg, Hamferð, Watain, some Stoner, Kyuss and such...

I've had a look at the video and tried out the eq setting he did. My impression is still that the XS sounds pretty damn fine without eq. It's of course worth a try though. Btw I also listen to metal a lot and also sometimes even use the XS for practicing guitar, to me it's fine.

Interesting. I pretty much never use my XS with EQ. Don't find them to be shrill or weak at all. Do you just tweak manually or use some EQ profile?

Reasonable.