The Kirkwall docks are always busy since it's a port and it not being busy is a bad thing, usually when the Qunari were doing something or maybe after the Chantry blew up. Yngvi wasn't around for that one.

With the spell in place it means that Yngvi can be bolder about really getting a good look for their--

"Hey there scumbag, it's me, your dwarf," he says because he can when he spots their good friend Shifty McFuck weaving his way towards a mid-sized ship with several dwarves guarding it. "Ah fuck."