A note on Ja'Far being inadequately armoured - it simply isn't his style. A hardsuit, torso plate and shoulder plate are really the only things you need for a reconnaissance specialist who specialises in stealth. Heavy armour isn't necessary when the enemy in theory doesn't know that you're there and can be a hindrance to move around in.

Also note (something I need to include in Ja'Far's CS), his flowery speech is relatively common amongst the High-Mid to Upper castes of the Hegemony that he associated with. A form of the Batarian language commonly used in Khar'Shan and the core worlds of the Hegemony when speaking to a caste higher than yourself.

The Legionnaires were naturally taught this so that they could communicate to any politicians that they needed to deal with or talk to. It's the dialect that they were forced to learn and so the one that flows easiest through his lips.