Gary Towsey, 43, arrived at the plush Bonham Hotel in Edinburgh dressed in full Highland regalia, including a kilt, jacket and shoes - after stumbling across the outfit abandoned in a city park.
The former BBC and Sky News anchor, 67, told Times Radio on Saturday that the response from the public 'surpassed anything I'd imagined' as he encouraged other men to get tested.
I am so grateful to the courage shown by Sir Chris and every man who's stepped up to speak out. Having been through kidney cancer myself, I know how difficult it can be to say those words.
The Olympian (pictured) started a campaign two weeks ago to encourage men to check if they are at risk of England's most common cancer, after announcing his own diagnosis last year.
The emotional moment came after co-captain Rory Darge hoped that Hoy's presence will boost the team's performance in such significant moment for the national team.
Watch as six-time Olympic champion Sir Chris Hoy receives an emotional ovation as he delivers the match ball at Murrayfield before Scotland face Ireland in the Six Nations.