[quote=@Silvan Haven]
I thought Diplomacy 101 was "Speak softly and carry a big stick?"
[/quote]

Basically what I meant to say. I was paraphrasing Grunt from ME2.

[quote=@Onarax]
Isn't Diplomacy 101: "Put all points in charisma, train skill."
[/quote]

Gren's more the type who'd chose feats or skills that allows him to use other stats for talking skills instead of Charisma, like INT for Bluff or Diplomacy and STR for Intimate.