John Mayer and Ed Sheeran are buds, their shared songwriting, singing, and guitaristic talent clearly having brought them together. They perform together, attend events together—it’s all very endearing, frankly. But even more endearing, as far as we’re concerned, is the unrelenting, A-1 horological nerdery that these two musicians share. Tthey’ve been known to buy their high quality replica watches in pairs—and to perform in them together. (Sometimes these super clone watches online even have Spider-Man on them.) They’ve collaborated on watch designs together. They’ve even appeared on Hodinkee’s Talking Watches together. So it’s little surprise Ed Sheeran was spotted at the Oracle Red Bull Racing garage ahead of the F1…