Yes, I also consider having notes autographed by the Governor and/or Deputy Governor to be more valuable and interesting to have in a papermoney collection than an unsigned note.
I have been fortunate to meet face-to-face with various Bank of Canada Governors and Deputy Governors over the past number of years: John Crow, Gordon Thiessen, Malcolm Knight, Paul Jenkins, David Dodge, and Mark Carney (and when available their Bank of Canada business cards).
I also have several notes autographed by Jorge Peral (designer of the Journey Note Series). He's the Art Director from the Canadian Bank Note Company (and I also have his business card, too).
It's pretty cool to have this 'unique' paper money collection.
Michael