|
My 'main' character in PFS is a Summoner who's Eidolon is built this way, and let me tell you it's really fun. I built him mostly off of the second guide that Experiment 626 linked, with my personal spin using traits to give him Bluff and Diplomacy to make him The Face. His Eidolon is built like a rogue, using Slight of Hand, Stealth, Perception, Sense Motive and Disable Device. She works wonders as his eyes and ears. As a bonus, I'll be putting her first stat point into Intelligence, bringing it to an even 8 and allowing me to retroactively put some ranks into Use Magic Device.
Since you're playing a melee summoner, you'll likely want to give yourself a bonus HP per level. Sadly, this means you can't play Human and give an extra skill rank to the Eidolon, which gives it more versatility AND bonus skill ranks for one-point-wonders on those occasional levels that don't grant it any bonus hit dice.
Skill feats are a great, I started with Deft Hands to make up for her relatively low dexterity, and Alertness followed suit. The Skilled evolution for Stealth and Perception, plus a Climb speed make her a fantastic scout. Even if she tends to get shredded half the time. But hey, silver lining: You have a general idea of what I'm up against, AND I don't have to spend an action to unsummon her before I can start casting my SLA Summon Monster!
As for suggestions on your Eidolon? Depends on what you want to do, and how well you want it to function in combat. Quadruped with Skilled: Perception and the Trip evolution means you've got a fantastic set of eyes along with a Trip Pal. Being a Summoner, you also have the best way to make use of the Lookout teamwork feat this side of Inquisitors. If you wanna do something really odd? Pick a flavorful set of skills and pimp your Eidolon out right and proper. Hell, give it Knowledges and Spellcraft, ignore the skills yourself, and roleplay as a regular Fighter Guy who has some kind of support from a diety/outsider.