I got rattled when they went rule-head on me with this:
1. Obey all warnings on the POD XT Live and in this Pilot’s Handbook.
But the only thing that I read about volume levels was actually phrased in a way that made it seem like they cared about you and not necessarily the people around you first:
8. Prolonged listening at high volume levels, especially with headphones, may cause irreparable hearing loss and/or damage. Always be sure to practice “safe listening.”
Note that the suggestion that Roland offered was to do exactly the thing that Line6 is warning you about - listening to loud music through headphones.
The way that I choose to interpret "safe-listening" in this context is to wear ear-plugs on stage and crank it up for the world to hear. Incidentally, if I find myself with front-row tickets I think they're a wise move too.
Interestingly this unit has a sweet-spot setting for the Bose PS1 Cylindrical Radiator™ which I find very interesting technically. I have been told by a beautiful woman that I trust however that they are not sexy.
I will say this - Line6 writes a far better manual than Roland. I think the proof is in the sound though... I guess I will have to harrass some poor salesman into letting me try them both. That sounds like an ordeal for us both.