UMD is a good option. I think disable device should be on the list (It's for PFS in theory, so there may not be a rogue).
The only issue with flying mount is that I don't really want it out in combat (since it limits me to 1 summon SLA in that case); Also with master summoner, the Eidolon can't get flight till 10th.
Stream mentioned this in my other PFS thread so I'm trying to run with that idea in it's own thread. I'm going to flesh out a couple build options at 1/5/10 and get opinions. I want 2 main things. a very powerful class at level one, and to not get overshadowed by level 12. I'm pretty sure this archetype does that the best, well this or the witch class, but that class is weaker at level 1.
Short builds
Half Elf - UMDmancer
FC: 1/4 Evolution points
Traits: Reactionary, Something that gives stealth and +1 Trait bonus.
Skill Focus: Knowledge (probably arcana)
1: Eldritch heritage: Familiar - Dino! (or raven, assuming it can UMD.)
2: Augment summoning (Class)
3: Superior Summoning
5: Still Spell (hopefully I'll have a silent rod by now) Still worth it, since stealth is stronk.
7: Improved familiar (imp for invisible UMD, more extra actions!) If the raven is working I might skip this, but Imp is super good.
9: ??
11: ??
Eidolon (I'm going to list summoner levels)
Small biped
Evolutions: Perception, Stealth, Disable Device
Skills: Perception +12, Stealth +18, Disable Device (12, with Masterwork Tools)
Feat: Skill focus Disable Device
4th: Evolutions: UMD, Natural Armor
6th:
