Just got this up and running. No issues so far except wireguard keepalive is broken for me for some reason. Very exciting to see Linux and FreeBSD pulling ZFS from the same upstream - I needed this to properly deal with encryption etc.
https://lists.zx2c4.com/pipermail/wireguard/2021-April/00661...
https://cgit.freebsd.org/ports/commit/?id=2ef23d42cbce1ed168...