The range on the double-barreled musket was a typo or other mistake. It's actually 40'. Not that I'm suggesting that it's a big enough deal to be worth the money & ioun stone, I think it's not.
My point is I'd rather play an Inquisitor with a gun then a Summoner. Granted 2d6 isn't much but you'd be surprised how many things have horrible and I do mean horrible Touch ACs.
I would rather play an Inquisitor with a toothpick then a Summoner.
I like summoner more because designing eidolon’s can be a lot of fun. But if it’s about who’s the best at summoning, I’d give the edge to the monster tactician.
When we are talking about summoning (reduced to the Summon Monster SLA), then the Master Summoner takes the cake due to the missing restrictions of how many SLAs you can have active. The I:MT is of course still a very cool combination of summoning abilities, skills and class abilities.
SYL
Master summoner is a special case. It’s one of the few archetypes that comes with a warning that you probably shouldn’t use it.
What is the best Domain/Inquisition/Revelation (Because the archetype stacks with Ravenor Hunter) for the Monster Tactician?
The lunar mystery could get you an animal companion at 1st level (in case you need an answer to this eidolon thing), and the ability to change form at 8th - summon SLAs should work just fine in animal form.
The conversion inquisition makes you the party face.
The possession inquisition lets you take over one of your summoned animals, if you think you could use their form better than they do.
The trickery domain has a neat defensive ability and lets you smuggle a bunch of pre-summoned monsters past the guards.
The glory/heroism subdomain has buffs.
Best depends on what you want to do.