Were both Dave Pirner and Aaron Pauley lead vocalists at some point in their music careers?
Dave Pirner: David Anthony "Dave" Pirner (born April 16, 1964) is an American songwriter, singer, and producer best known as the lead vocalist and frontman for the alternative rock band Soul Asylum. Aaron Pauley:  He is most prominently known as the lead vocalist and bassist for the American heavy metal band Of Mice & Men. Aaron Pauley:  He formerly was the lead vocalist in the bands Jamie's Elsewhere and Razing Alexandria.
yes