I'm guessing my perspective is tainted from having played WoW, where it was fairly easy to manage threat between your char and summoned monsters/pets by using one or more skills of the pet or yourself.
In TESO, however, I'm having a significant amount of trouble figuring out how to transfer threat between my char and my clanfear summon. Even if I use a DoT curse, it seems to immediately pull threat from my clanfear to me, even if I wait a bit first and let the clanfear deal some damage.
Is there something I'm missing here? If there's no way to effectively manage threat between a char and summons then daedra summoning is going to be fairly difficult for solo players to use, if not useless.