Harri - Using beadm / zfssnap

Hi

 Maybe You could shed some light on this question I been wondering.
Mainly I'm concerned if there is some caveats I have not thought of.
Or maybe I'm just too paranoid after all the mistakes I have managed to do to this age.

I have FreeBSD machine with zfs and I have used beadm when doing updates. I have mainly used "chroot method", sort of one described by Dan Langille (https://dan.langille.org/2015/03/13/upgrading-from-freebsd-9-3-to-freebsd-10-1-using-beadm-and-freebsd-update/).

Now I started using zfsnap to take automatic snapshots of system.

Is there any scenario, where using both zfsnap and beadm one could shoot he's own leg?

Like when doing new boot environment, example upgrading it, and starting to use it. Are old snapshots taken from earlier boot environment with zfsnap still usable?

Is there some better way to deal with zfsnap and upgrades or some kind of "best practice"?

Br. Harza

ps. Thank's again from great show!