1. Yes, https://www.imperialviolet.org/2019/10/30/pqsivssl.html and https://blog.cloudflare.com/the-tls-post-quantum-experiment/ describe actual experiments Google ran using randomly selected Chrome canary users against Cloudflare and indeed their test algorithms CECPQ2 and CECPQ2b are both hybrids built using ECC plus a post-quantum algorithm.

2. However at this present time there is a strong constituency (e.g. see morelisp's comment in this sub-thread) which is happy to blame cryptographic agility for problems it arguably had little or no part in, so you can expect them to fight this while of course not committing to any particular post-quantum crypto because they also hate being wrong and invariably if you pick one now you'll be wrong.