Were  David Usher and Jimmy Urine both known for the work with the band "Moist"?
no
Title: Jimmy Urine
Passage: James Euringer (born September 7, 1969), known professionally as Jimmy Urine, is an American singer, songwriter, and musician.  He is best known as the lead singer and programmer of electropunk band Mindless Self Indulgence.
Title: David Usher
Passage: David Usher (born April 24, 1966) is an English-born Canadian musician, best-selling author, keynote speaker and activist, known as the lead singer of the alternative rock band Moist.
Title: Moist (Canadian band)
Passage: Moist is a Canadian rock band that originally formed in 1992.  It consists of David Usher as lead vocalist, Mark Makoway on lead guitars, Jonathan Gallivan on guitars, Kevin Young on keyboards, Francis Fillion on drums and Louis Lalancette on bass.  The band's original drummer Paul Wilcox left the band just before its hiatus in 2000, and original bassist Jeff Pearce departed shortly after its reestablishment in early 2014.
David Usher Jimmy Urine