@ninjatuna I apologize for this aside.
@osiris and @rg305
As I researched TLS-ALPN since your comments I saw the Lets Encrypt TLS-ALPN docs are stale. For example, in the cons section it says:
It’s not supported by Apache, Nginx, or Certbot, and probably won’t be soon.
From: Challenge Types - Let's Encrypt
I went to submit correction feedback but saw it was requested some time ago. Seems to correct it just needs an update to the git for the docs. You both have the expertise and credibility to make those updates. Just sayin' 
Cheers