How did I miss this for all these years I've used ssh?
~/.ssh/config lets you type#ssh home
#firstname.lastname@example.org -p 10001
Here is the ~/.ssh/config
Combine this passwordless ssh with
ssh-copy-id -i ~/.ssh/id_rsa.pub email@example.com
and phoning home is pretty effortless.
... another one of those note-to-future-Finn (tm) posts which I'll copy and paste stuff from.