ZFS replication to ZoL encrypted dataset?

Intrigued by a suggestion from @garm, I'm trying to set up an Odroid HC2 as a replication target for FreeNAS. The HC2 is a single-board computer with a SATA interface, mounted to a heatsink that'll easily hold a 3.5" HDD. It runs Linux (among other things, though not FreeBSD) and should make for a handy, low-power, low-price storage brick.

I'm writing up what I'm doing as I go on...

ZFS replication to ZoL encrypted dataset?