I will give a multi-messenger perspective on the path to discovering gravitationally lensed binary compact object mergers, emphasising upcoming contributions from the Vera C. Rubin Observatory's Legacy Survey of Space and Time. This is an exciting time across diverse communities for many reasons, including on the electromagnetic side that Rubin commissioning observations are taking place right now, Rubin and her contemporaries will discover a significant fraction of the gravitational lenses in the observable universe, and the community's input to Rubin's target of opportunity programme (including rapid follow up of candidate lensed GW sources) has recently been approved by the Observatory. I will also offer perspectives on open problems, and suggest how some of them may be addressed in the years ahead.