Yes. Some time ago. Circumstances took me to TrueNAS Core BSD flavour which is regrettably retrograde, and I am about to rejoin the cleaner experience but the transition is .. scary. Making a smaller kernel is off to one side of my main intent which is to NOT lose my existing ZFS state!
After TrueNAS CORE went dead and iXsystems focused on Linux based SCALE version the free and open source 'zVault' fork of TrueNAS CORE happened - https://zvault.io - its page here.
One of my buddies switched from TrueNAS SCALE to FreeBSD based zVault and is more then happy:
He does not have really high expectations - besides having about 2TB of data he runs one Bhyve VM with Linux 'Home Assistant' and one FreeBSD Jail with 'Plex Media Server'.
