Not touring but I've had no issues crossing USA twice and Europe 4x
Ireland is tiny, you're not going to be that far from a bike shop and the beauty of hydro is you can run one brake and not die so take it easy and roll to a shop but normally if you set them up properly and carry spare pads you will have no issues unless you crash.
There are different levels within the GRX range but I’m not sure how exactly that match with either the road or the mtb offerings. Or perhaps they don’t.
Not touring but I've had no issues crossing USA twice and Europe 4x
Ireland is tiny, you're not going to be that far from a bike shop and the beauty of hydro is you can run one brake and not die so take it easy and roll to a shop but normally if you set them up properly and carry spare pads you will have no issues unless you crash.