"Light up the Sky" isn't exactly easy singing, but some stuff from ADKOT seems to be more demanding,
like "China Town" (I wish they'd drop this one and insert "As is" or "Bullethead" in the setlist instead), in
which Dave sounds like he's struggling a little.
"Drop Dead Legs" would be absolute kickass, and more comfortable somehow for Dave to sing than for Ed,
Al and Wolf to play.
Who knows, but I guess "Light up the Sky" and "Drop Dead Legs" will appear at some point in the song list,
and Dave isn't refraining the band from playing them, because they're not that challenging tunes for his vocals.