While studying at Ryerson Institute of Technology's radio and television arts program, he also served in the Royal Canadian Air Force (RCAF) where part of his training centred on meteorology.
Devall's voice was heard across Canada as Jim Perry's announcer on many of his game shows, including Definition, Headline Hunters and Eye Bet.
[9][10] Following retirement, Devall has made appearances in television commercials for local businesses, including an area Toyota dealership in 2010 and Loblaws in 2011.
[11] He was also one of several retired longtime CFTO employees (including the more recent departures of Tom Gibney (2007) and Jim Junkin (2010)) who returned for a retrospective on the station's fiftieth anniversary on December 31, 2010.
[11] One of Devall's major appearances after retiring was as the master of ceremonies for the 2013 Portraits of Honour Juno Beach Dinner Gala, in Cambridge, Ontario.