This I was completely unaware of. I'd read the majority of the docs, so this isn't really emphasised. Tbh, if this had been front-and-centre when I started imp

This I was completely unaware of. I'd read the majority of the docs, so this isn't really emphasised. Tbh, if this had been front-and-centre when I started implementing AMP, I might have actually finished the job without balking at the hard Google dependency and abandoning the effort. I'm still wary of it given the Google-hosting of AMPed pages accessed via SERPs, but this does make it slightly less awful I guess.