That makes sense, it would be the smart thing to do. Although according to stuff said in Origins the Darkspawn fighting in Orzammer and the deep roads actually dies down during blights since most of the Darkspawn head topside. If he were to see heavy fighting it would most likely be just after the blight as all the remaining DS head back underground. Apologies for pointing shit out, I'm not usually a critic, I just played Origins again recently with the Casteless Dwarf Origin and read a crap ton of lore. It's interesting stuff, haha.