Note that Panbio is approved for throat+nasal swabbing in Ontario. I highly reccomemd it. https://www.health.gov.on.ca/en/pro/programs/publichealth/coronavirus/docs/Antigen_Screening_Guidance_2021-03-5.pdf
Thanks @DrKateTO for pointing this out! https://x.com/obenfine/status/1475252837177348100

Again, the UK has good instructions since they’ve been doing this swabbing technique since the start: https://youtu.be/5qHTBlxfNes

Interestingly, the benefit might be from collecting saliva. More data needed! https://www.medrxiv.org/content/10.1101/2021.12.22.21268246v1