guess it depends on what you are doing. Ducal guard really on a factor when you pets under 50% health. So this could be useful in solo situations but if i was with a group i wouldnt be using it or Mounted Champion, i'd be using DD atmas raised run, voracious violent, Gnarled horn, Apoc, alpha omega, Stout arm, harvester, etc etc. So situation and pet would matter in atma choice. Do i want evasion well i'd use Dipper and probably something like Siren Shadow, RR, and either another kind of tank atma or dd atma depending on what i'm fighting.
If i'm out just fighting regular mobs by myself for things like farming or what not i'd just go DD setup, if i'm soling NMs then more tank based, PDT, Evasion, etc.