Thanks. The one thing that is missing for me (...or I just haven't worked it out yet):

Can you use a hostname other than 'github.com'?
For instance if your .ssh/config has a 'github-work' and a 'github-personal' how would one point the alias (or hosts.yml.work, not sure where it would need to happen) to use the 'github-work' hostname from .ssh/config?

Still love this overall though, thanks!

Can you use a hostname other than 'github.com'?

You should be able to. Try replacing the github.com in hosts.yml.<whetever_you_named_it> with the actual GHE hostname that you use to connect to your GHE instance.

For instance if your .ssh/config has a 'github-work' and a 'github-personal' how would one point the alias (or hosts.yml.work, not sure where it would need to happen) to use the 'github-work' hostname from .ssh/config?

Don't think it's feasible as GH CLI and SSH CLI don't have anything in common around SSH host aliases.
To the best of my knowledge, in GH CLI config you have to use actual GH instance hostname and it doesn't support aliasing. But you should be good to go with actual GHE instance hostname.

Still love this overall though, thanks!

Nowadays you definitely should better use gh auth login and gh auth switch (see gh auth login --help and gh auth switch --help for details on args).

Thanks for the quick response, and I'll look into gh switch and multiple accounts too. Cheers.