I have both a normal full face helmet and my Airoh adv helmet.
I reckon for extended road touring adv helmets are probably not the go. With my Airoh you can't close any vents so if the weather gets worse then you wear some of it. The peak doesn't really bother me although in big cross winds my head gets jerked around a bit.
Noise is not an issue as I wear custom plugs. I never change visors either - just change to sunglasses.
'08 Vee: Suzy luggage, Crash bars, Rad Guard & front mudguard extension, Zumo 550, Oxford Hot grips, Stebel, PC-8, 12v acc, Scott oiler & lube-tube, Remus Revolution Cans, Bark Busters, Phillips Extreme vision +100 bulbs.
'08 Concours 14: Rad guard, Stebel, Oxford Hot grips, Projekt D Screen, Hugger, GPS mount, helmet locks & front guard extension, Zumo 550, Stebel, Phil's rack & Givi V46, Sheepskin seat cover, Phillips Extreme vision +100 bulbs.