That’s more-or-less what I thought. And in fact I forgot to add to my post that I also use Pihole on the go via Wireguard, which seems like another hurdle to converting to AdGuard. Thanks.

I use DuckDNS. There’s been only one outage for the ~2 years I’ve been using it and it’s free. I also use DuckDNS to acquire the SSL certificates for the reverse proxy.