Trying to get SSH to work with certs can involve just as much or more stuff than that.
Maybe i'll write a super simple guide, just listing the bare commands, since the documentation/tutorials for powershell seem non-existent despite being pretty powerful..
Guides like https://wprogramming.wordpress.com/2011/07/11/remote-pssessi... don't seem "fairly easy" to me (that's why I said it requires a lot more configuration compared to Enter-PSSession when both parties are in the same domain).