No, but a “God” should be Invulnerable, rather than just Impervious. I’ve met a few ZG teams in PvP and never had a problem dealing with them.
As for “Getting a troop you don’t have”, if it’s a troop you’re not likely to use much, then it’s not an effective use of resources, and it’s not even as if you need him for that extra +1 Magic in Karakoth any more.